SUGAR DAYS Members Profile 2026: Facts, History & Bios
SUGAR DAYS (์๊ฐ๋ฐ์ด์ฆ) is one of the most intriguing new names in the K-pop landscape of 2026. Operating under Liz Entertainment, this project girl group represents a bold new chapter for an agency known for its diverse roster of artists. Originally formed under the name MTRIX as a mixed-gender trio, the group has since evolved into an all-female project with a fresh identity and a growing international fanbase.
The group is notable for its cross-cultural composition, bringing together talent from South Korea, Japan, and China. This global approach reflects Liz Entertainment’s stated goal of uniting different cultures through music, a vision that was embedded in the original MTRIX name – which stood for Music, Three Nations, Remix, and Infinity X. While SUGAR DAYS is still in its pre-debut phase, the group has already generated significant buzz through member reveals, a planned Japanese mini-concert, and the involvement of seasoned idols with established careers.
This SUGAR DAYS members profile 2026 guide provides everything fans need to know about the group, its history, its management, and every revealed member. While some details remain undisclosed as the group prepares for its official debut, this article compiles all publicly available and verifiable information.
Quick Facts Table
| Category | Details |
|---|---|
| Group Name | SUGAR DAYS (์๊ฐ๋ฐ์ด์ฆ) |
| Korean Name | ์๊ฐ๋ฐ์ด์ฆ |
| Former Name | MTRIX (์ ํธ๋ฆญ์ค) |
| Debut Date | To be announced (officially undetermined) |
| Agency | Liz Entertainment |
| Origin | Seoul, South Korea |
| Genre | K-Pop |
| Number of Members | 3 revealed (Miku, Hyoa, Aera) |
| Active Years | 2026โpresent |
| Official Fandom Name | Not publicly announced |
| Official Colors | Not publicly announced |
| Current Status | Pre-debut |
Table of Contents
Who Is SUGAR DAYS?
SUGAR DAYS is an upcoming project girl group under Liz Entertainment, a South Korean entertainment company founded in 2014. The group was initially introduced as MTRIX, a global co-ed trio that included former NOIR member LUSEON (real name Kim Dae-won), M.prism member Miku, and Chinese trainee Hyoa. The original lineup was designed to bring together artists representing South Korea, Japan, and China on one stage.
However, the project underwent a significant transformation. LUSEON departed from the lineup, and the group was rebranded as SUGAR DAYS, pivoting to an all-female formation. The current revealed lineup includes Miku (Main Vocal), Hyoa (Rapper, Maknae), and Aera, a trainee who was introduced separately.
As a “project girl group,” SUGAR DAYS operates under a flexible structure that allows for member changes and evolving concepts, similar to other project-based groups in the K-pop industry. This format gives the agency room to experiment with different musical directions and collaborations.
Group History
Formation and Pre-Debut
The journey of SUGAR DAYS began with MTRIX, a global co-ed project group announced by Liz Entertainment in mid-2026. The name MTRIX was an acronym standing for Music, Three Nations, Remix, and Infinity X, reflecting the group’s ambition to unite different cultures through music. The original lineup consisted of three members: LUSEON (formerly of the boy group NOIR), Miku (formerly of M.prism and ICU), and Hyoa (a Chinese trainee new to the K-pop scene).
On July 30, 2026, Liz Entertainment officially announced Hyoa as a member of MTRIX, marking the first public reveal of the group’s formation. Around the same period, Miku and LUSEON were also confirmed as members. The trio was positioned as a groundbreaking global project, with each member representing a different East Asian nation: Korea (LUSEON), Japan (Miku), and China (Hyoa).
Official Debut
As of the time of writing, SUGAR DAYS has not yet made its official debut. The group remains in its pre-debut phase, with no confirmed debut date, debut single, or debut album announced. This information is not publicly available.
Breakthrough Success
Since SUGAR DAYS has not yet debuted, the group has not achieved commercial success or chart milestones. However, the group has attracted attention from K-pop fans due to the involvement of established artists like Miku and LUSEON, as well as the unique cross-cultural concept.
Major Career Milestones
- July 2026: Hyoa announced as a member of MTRIX
- 2026: Group rebranded from MTRIX to SUGAR DAYS; LUSEON departs; Aera introduced
- OctoberโNovember 2026: SUGAR DAYS scheduled for a mini-concert in Tokyo, Japan
Recent Activities
The most significant recent activity for SUGAR DAYS is a planned mini-concert and promotional event in Japan. According to the group’s official X (formerly Twitter) account, SUGAR DAYS is scheduled to hold a mini-concert in Tokyo from October 30 to November 8, 2026. The event is described as “SUGAR DAYS in JAPAN” and includes a Japanese magazine shoot. The concert’s tagline is “Sweet at first, addictive forever.” This marks the group’s first major international promotional activity.
Agency and Management
SUGAR DAYS is managed by Liz Entertainment (๋ฆฌ์ฆ์ํฐํ ์ธ๋จผํธ), a South Korean record label and entertainment agency founded in 2014 and headquartered in Seoul. The company’s co-CEOs are Kwon Insun and Lee Hyunsoo.
Liz Entertainment has a diverse roster of artists across multiple generations. Current groups include M.prism (a five-member girl group that debuted in March 2025), while the company also manages soloists such as U Hee, Laeun, and LUSEON. The agency has historically managed several girl groups, including Honey Girls, WE-SAY, Chic Angel, Chic&I’s, Girls’ World, and ICU, though many of these groups have since disbanded or seen member departures.
Liz Entertainment is known for its project-based approach to group formation, often creating units and project groups that remix 1990s hit songs and feature rotating lineups. This model has been applied to SUGAR DAYS, which operates as a project group with a flexible structure.
The agency maintains an official website at lizent.co.kr.
Member Profiles
Miku Profile
Personal Information
- Full Name: Not publicly available
- Korean Name: ๋ฏธ์ฟ
- Stage Name: Miku (๋ฏธ์ฟ )
- Date of Birth: March 1, 2002
- Age: 24 (as of 2026)
- Zodiac Sign: Pisces
- Chinese Zodiac: Horse
- Birthplace: Okinawa, Japan
- Nationality: Japanese
- Height: Not publicly available
- Weight: Not publicly available
- Blood Type: Not publicly available
- MBTI Type: Not publicly available
Group Role
- Position(s): Main Vocalist
- Representative Emoji: Not officially designated
- Training Period: Not publicly available
Early Life and Education
Miku was born on March 1, 2002, in Okinawa, Japan. She is a Japanese national who pursued a career in entertainment from a young age. Details about her early education and family background are not publicly available. She is known to have developed strong Korean language skills, with observers noting that her Korean pronunciation is natural and lacks the typical Japanese nasal sounds often heard when Japanese speakers sing in Korean.
Career Journey
Miku has one of the most extensive pre-debut careers among the SUGAR DAYS members. Before joining SUGAR DAYS, she was a member of several Liz Entertainment groups. She was formerly part of Chic&I, ICU, and IQ (where she was known by the stage name Rei). She also debuted as a soloist in 2024. Most notably, she was a member of M.prism, a five-member girl group under Liz Entertainment that debuted on March 28, 2025, with the digital single “Knock Down.” Within M.prism, Miku held the position of Maknae and was associated with the color blue.
Her journey to SUGAR DAYS represents a continued evolution within the Liz Entertainment ecosystem, transitioning from M.prism to the SUGAR DAYS project. She has accumulated significant experience in the K-pop industry through her various group activities and solo work.
Family Background
Information about Miku’s family is not publicly available.
Relationship Status
Information about Miku’s relationship status is not publicly available.
Net Worth
Miku’s net worth is not publicly available. As an active idol under a mid-sized agency, her income would primarily come from album sales, streaming, live performances, and possibly endorsements, though no official figures have been disclosed.
Social Media Profiles
- Official Group X (Twitter): @SUGARDAYS_00
- Personal Social Media: Not publicly available
Interesting Facts
- Miku is from Okinawa, Japan, a subtropical island known for its distinct culture and music.
- She has been a member of at least four different groups under Liz Entertainment: Chic&I, ICU, IQ, and M.prism.
- During her time in IQ, she used the stage name Rei.
- She debuted as a soloist in 2024 before joining M.prism.
- In M.prism, she was the Maknae and her representative color was blue.
- She is one of the few Japanese idols to have worked extensively across multiple K-pop group formations.
- Her Korean pronunciation is considered exceptionally natural for a Japanese native.
- She is the only member of SUGAR DAYS with prior experience in an officially debuted K-pop group.
Hyoa Profile
Personal Information
- Full Name: Not publicly available
- Korean Name: ํจ์
- Stage Name: Hyoa (ํจ์)
- Date of Birth: 2008
- Age: Approximately 17โ18 (as of 2026)
- Zodiac Sign: Not publicly available
- Chinese Zodiac: Rat (2008)
- Birthplace: China
- Nationality: Chinese
- Height: Not publicly available
- Weight: Not publicly available
- Blood Type: Not publicly available
- MBTI Type: Not publicly available
Group Role
- Position(s): Rapper, Maknae
- Representative Emoji: Not officially designated
- Training Period: Not publicly available
Early Life and Education
Hyoa was born in China in 2008. She is the first Chinese trainee to be part of a Liz Entertainment group, marking a significant step for the agency’s international expansion. Details about her early life, education, and family in China are not publicly available. She is believed to be based in South Korea for her trainee activities.
Career Journey
Hyoa’s entry into the K-pop industry was formally announced on July 30, 2026, when Liz Entertainment revealed her as a member of MTRIX, the project group that would later become SUGAR DAYS. She was positioned as the group’s Rapper and Maknae (youngest member), roles that highlight both her musical skills and her status as the youngest member of the lineup.
As a trainee under Liz Entertainment, Hyoa is reportedly preparing for her official debut with SUGAR DAYS. While she has not yet made her formal debut, her inclusion in the group represents Liz Entertainment’s commitment to building a global roster. Her participation in the planned Japan mini-concert in late 2026 would mark her first major public performance.
Family Background
Information about Hyoa’s family is not publicly available.
Relationship Status
Information about Hyoa’s relationship status is not publicly available.
Net Worth
Hyoa’s net worth is not publicly available. As a pre-debut trainee, she is likely not yet earning significant income from entertainment activities.
Social Media Profiles
- Official Group X (Twitter): @SUGARDAYS_00
- Personal Social Media: Not publicly available
Interesting Facts
- Hyoa is the first Chinese trainee to be part of a Liz Entertainment group.
- She was announced as a member of MTRIX on July 30, 2026.
- She holds the positions of Rapper and Maknae in SUGAR DAYS.
- She was born in 2008, making her the youngest revealed member of the group.
- Her inclusion in the group reflects Liz Entertainment’s global ambitions.
- She is one of three members representing three different countries in the original MTRIX lineup (Korea, Japan, China).
- She is bilingual or multilingual, speaking Chinese and likely Korean as a trainee.
- Her official profile photo for MTRIX was one of the first visual materials released for the group.
Aera Profile
Personal Information
- Full Name: Not publicly available
- Korean Name: ์ ๋ผ
- Stage Name: Aera (์ ๋ผ)
- Date of Birth: Not publicly available
- Age: Not publicly available
- Zodiac Sign: Not publicly available
- Chinese Zodiac: Not publicly available
- Birthplace: Not publicly available
- Nationality: Not publicly available (likely South Korean)
- Height: Not publicly available
- Weight: Not publicly available
- Blood Type: Not publicly available
- MBTI Type: Not publicly available
Group Role
- Position(s): Not publicly confirmed
- Representative Emoji: Not officially designated
- Training Period: Not publicly available
Early Life and Education
Detailed information about Aera’s early life, education, and family background is not publicly available. She is described as a trainee under Liz Entertainment and a member of SUGAR DAYS. Her Korean stage name “์ ๋ผ” suggests she is likely of Korean nationality, but this has not been officially confirmed.
Career Journey
Aera was introduced as a trainee under Liz Entertainment and a member of SUGAR DAYS. Her profile page on Kpop Fandom was created on October 2, 2026, indicating that she is one of the more recently revealed members of the group. As a trainee, she is currently preparing for her official debut with SUGAR DAYS.
While specific details about her training period and pre-debut activities are not publicly available, her inclusion in SUGAR DAYS suggests she has undergone the standard trainee development process at Liz Entertainment, which typically includes vocal training, dance practice, and Korean language study (if applicable).
Family Background
Information about Aera’s family is not publicly available.
Relationship Status
Information about Aera’s relationship status is not publicly available.
Net Worth
Aera’s net worth is not publicly available. As a pre-debut trainee, she is not yet earning significant income from entertainment activities.
Social Media Profiles
- Official Group X (Twitter): @SUGARDAYS_00
- Personal Social Media: Not publicly available
Interesting Facts
- Aera’s Kpop Fandom profile was created on October 2, 2026, making her one of the most recently revealed members.
- She is a trainee under Liz Entertainment.
- Her stage name “Aera” (์ ๋ผ) is a Korean name.
- She was added to SUGAR DAYS after the group’s rebranding from MTRIX.
- Her specific position within the group has not yet been officially announced.
- She represents the next generation of Liz Entertainment trainees.
- She is part of the all-female lineup that distinguishes SUGAR DAYS from its predecessor MTRIX.
- Her official introduction to the public occurred in late 2026.
Former Members
LUSEON (Former Leader, Main Vocalist)
Personal Information
- Full Name: Kim Dae-won (๊น๋์)
- Korean Name: ๊น๋์
- Stage Name: LUSEON (๋ฃจ์์จ); formerly known as Daewon (๋์)
- Date of Birth: April 18, 2000
- Age: 26 (as of 2026)
- Zodiac Sign: Aries
- Chinese Zodiac: Dragon
- Birthplace: South Korea
- Nationality: South Korean
- Height: 171 cm (5’7″)
- Weight: 54 kg (119 lbs)
- Blood Type: AB
- MBTI Type: Not publicly available
Group Role (Former)
- Position(s): Leader, Main Vocalist
- Representative Emoji: Not officially designated
- Training Period: Not publicly available
Early Life and Education
Kim Dae-won was born on April 18, 2000, in South Korea. He attended Hanlim Multi Art High School, where he studied in the Department of Practical Dance. He graduated on February 12, 2019.
Career Journey
LUSEON made his debut in the K-pop industry on April 9, 2018, as a member of the boy group NOIR, under the stage name Daewon. He was the maknae of the nine-member group and contributed as a vocalist and performer. NOIR released their first mini-album, “Twenty’s Noir,” upon debut. He was active with NOIR from 2018 to 2024.
On November 19, 2025, it was reported that he had signed with JUBAL Company and would be making his solo debut in January 2026. He later signed with Liz Entertainment in June 2026, where he was announced as a member of MTRIX alongside Miku and Hyoa. He also became part of the Liz Entertainment boy group project as the first revealed member.
LUSEON’s stage name is derived from “LU” (light), “SE” (world), and “ON” (existence). He eventually departed from MTRIX (which became SUGAR DAYS) and went on to join the project group CRAVE, where he was introduced as a member on August 18, 2026.
Family Background
Information about LUSEON’s family is not publicly available, though his family name is associated with the Gwang-san Kim clan (๊ด์ฐ ๊น์จ).
Relationship Status
Information about LUSEON’s relationship status is not publicly available.
Net Worth
LUSEON’s net worth is not publicly available. As a former member of NOIR and an active artist under multiple agencies, his income would come from music releases, performances, and potentially acting or variety appearances.
Social Media Profiles
- Official Group X (Twitter): @SUGARDAYS_00 (as former member)
- Personal Social Media: Not publicly available
Interesting Facts
- LUSEON was the leader and main vocalist of MTRIX before the group’s rebranding.
- He debuted with NOIR in 2018 as the group’s maknae.
- He attended Hanlim Multi Art High School’s Practical Dance department.
- His stage name means “light world existence.”
- He signed with JUBAL Company in November 2025 for a planned solo debut.
- He joined Liz Entertainment in June 2026.
- He was part of both MTRIX and the Liz Entertainment boy group project.
- He later became a member of the project group CRAVE.
- He was born in the year 2000, making him 26 years old in 2026.
- He is 171 cm tall and weighs 54 kg.
Discography
As SUGAR DAYS has not yet debuted, the group has no official discography. All information regarding their musical releases is not publicly available at this time.
| Release Type | Title | Release Date | Notes |
|---|---|---|---|
| Debut Single | Not announced | Not announced | To be confirmed |
| Studio Album | Not announced | Not announced | To be confirmed |
| Mini Album | Not announced | Not announced | To be confirmed |
| Singles | Not announced | Not announced | To be confirmed |
| Japanese Releases | Not announced | Not announced | To be confirmed |
Music Style and Influence
Since SUGAR DAYS has not yet released any music, their musical identity, concepts, and artistic direction have not been publicly defined. The group’s predecessor, MTRIX, was described as a “global co-ed project group” with a goal of uniting different cultures through music, which suggests that SUGAR DAYS may continue with a similarly international and collaborative approach. However, no official statements about the group’s musical genre, concept, or influences have been released.
Awards and Achievements
SUGAR DAYS has not yet debuted and therefore has not received any awards or achieved any chart milestones. All information regarding awards and achievements is not publicly available at this time.
| Category | Details |
|---|---|
| Major Awards | None (pre-debut) |
| Music Show Wins | None (pre-debut) |
| Industry Recognition | None (pre-debut) |
| Global Achievements | None (pre-debut) |
Tours and Concerts
SUGAR DAYS has one confirmed upcoming event: a mini-concert and promotional tour in Japan.
| Event | Location | Dates | Notes |
|---|---|---|---|
| SUGAR DAYS in JAPAN | Tokyo, Japan | October 30 โ November 8, 2026 | Mini-concert and magazine shoot |
This event marks the group’s first major public performance activity. Further tour dates and fan meetings have not been announced.
Brand Endorsements and Ambassadorships
As a pre-debut group, SUGAR DAYS has no publicly announced brand endorsements or ambassadorships. This information is not publicly available.
Social Media Presence
| Platform | Account | Status |
|---|---|---|
| Not publicly available | Not confirmed | |
| X (Twitter) | @SUGARDAYS_00 | Active |
| TikTok | Not publicly available | Not confirmed |
| YouTube | Not publicly available | Not confirmed |
| Weverse | Not publicly available | Not confirmed |
| Official Website | lizent.co.kr (agency website) | Active |
Net Worth and Revenue Sources
As SUGAR DAYS is a pre-debut group, the members are not yet generating significant revenue through group activities. Their income streams will likely include:
- Album Sales: Future revenue from physical and digital album sales.
- Streaming: Income from music streaming platforms.
- Concerts: Revenue from live performances and tours.
- Merchandise: Sales of official group merchandise.
- Endorsements: Potential brand partnerships and advertising deals.
- Acting Projects: Individual member activities in acting or variety shows.
- Solo Activities: Miku’s solo music career and other individual pursuits.
No official financial figures are publicly available for any member.
Interesting Facts About SUGAR DAYS
- SUGAR DAYS was originally named MTRIX, which stood for Music, Three Nations, Remix, and Infinity X.
- The group was initially planned as a mixed-gender trio featuring members from Korea, Japan, and China.
- Hyoa is the first Chinese trainee to be part of a Liz Entertainment group.
- Miku is from Okinawa, Japan, and has been part of at least four different groups under Liz Entertainment.
- LUSEON, the group’s former leader, debuted with NOIR in 2018.
- The group’s first international activity is a mini-concert in Tokyo scheduled for late 2026.
- Aera was introduced as a member in October 2026, making her one of the most recently revealed members.
- SUGAR DAYS is a project girl group, meaning its lineup and concept may evolve over time.
- The group’s agency, Liz Entertainment, is known for its project-based approach to group formation.
- SUGAR DAYS’ debut date has not yet been announced.
Frequently Asked Questions (FAQ)
1. Who is the leader of SUGAR DAYS?
The leader of SUGAR DAYS has not been publicly announced. The group’s former leader was LUSEON, who departed from the lineup before the rebranding.
2. How many members does SUGAR DAYS have?
SUGAR DAYS currently has three revealed members: Miku, Hyoa, and Aera. The final lineup has not been confirmed.
3. When did SUGAR DAYS debut?
SUGAR DAYS has not yet made its official debut. The debut date has not been announced.
4. Who is the oldest member of SUGAR DAYS?
Among the revealed members, Miku (born March 1, 2002) is the oldest.
5. Who is the youngest member of SUGAR DAYS?
Hyoa (born 2008) is the youngest revealed member and holds the Maknae position.
6. What agency manages SUGAR DAYS?
SUGAR DAYS is managed by Liz Entertainment, a South Korean entertainment company founded in 2014.
7. What is the fandom name of SUGAR DAYS?
The official fandom name has not been announced.
8. What are the members’ positions in SUGAR DAYS?
Miku is the Main Vocalist, Hyoa is the Rapper and Maknae. Aera’s position has not been officially confirmed.
9. What was SUGAR DAYS’ former group name?
The group was formerly known as MTRIX (์ ํธ๋ฆญ์ค).
10. Why did LUSEON leave SUGAR DAYS?
The reason for LUSEON’s departure from MTRIX/SUGAR DAYS has not been publicly disclosed. He later joined the project group CRAVE.
11. Is SUGAR DAYS a co-ed group?
No, SUGAR DAYS is an all-female girl group. Its predecessor, MTRIX, was originally planned as a co-ed group.
12. Where is SUGAR DAYS from?
SUGAR DAYS is based in Seoul, South Korea, under Liz Entertainment.
13. Has SUGAR DAYS released any music?
No, SUGAR DAYS has not yet released any music as the group has not debuted.
14. What is the official social media account of SUGAR DAYS?
The group’s official X (Twitter) account is @SUGARDAYS_00.
15. When is SUGAR DAYS’ Japan concert?
The SUGAR DAYS Japan mini-concert is scheduled for October 30 to November 8, 2026, in Tokyo.
Conclusion
SUGAR DAYS represents an exciting new chapter in the K-pop landscape of 2026. While the group has not yet made its official debut, the foundation has been laid for what promises to be a dynamic and globally minded project. The transition from MTRIX to SUGAR DAYS, the departure of LUSEON, and the introduction of Aera signal an evolving vision under Liz Entertainment.
With members from Korea, Japan, and China, SUGAR DAYS carries forward the original MTRIX goal of uniting cultures through music. Miku brings years of experience from her time in multiple Liz Entertainment groups, Hyoa adds youthful energy and international appeal as the group’s Chinese rapper and maknae, and Aera represents fresh talent ready to be introduced to the world.
The upcoming Japan mini-concert in late 2026 will be a crucial first test for SUGAR DAYS, giving fans their first real glimpse of the group in action. As the debut date approaches, more details about the group’s music, concept, and final lineup are expected to be revealed.
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