Cosmosy Members Profile 2026: Ages, Heights & Interesting Facts
cosmosy is a four-member K-pop girl group made up entirely of Japanese members: Himesha, De_Hana, Kamión, and A’mei. The group debuted on April 11, 2025, under NTT Docomo Studio & Live and Sony Music Entertainment Korea. Their fandom name is eye=sy. The oldest member is Himesha (born January 23, 2006), and the youngest is A’mei (born October 30, 2007). cosmosy won the Global New Wave award at the 2026 SPOTV K-POP AWARDS and was selected for Google’s 2025 Global Breakout Searches in the K-Pop Debuts category.
cosmosy is a four-member K-pop girl group made up entirely of Japanese members. The team debuted under NTT Docomo Studio & Live and Sony Music Entertainment Korea, blending Korean training systems with Japanese sensibilities and multilingual music. The group’s name comes from “COSMOS of Youth,” a concept built around growth, youth, and infinite possibility.
This cosmosy members profile 2026 brings together verified details about each member, the group’s career path, awards, and the facts fans search for most. The lineup includes Himesha, De_Hana, Kamión, and A’mei. They have already performed at KCON LA, appeared at Anime Expo, and earned a domestic award in Korea.
The article separates confirmed information from details that are not publicly available. No ages, family backgrounds, or income figures have been invented. The goal is a clean, source-based reference for global K-pop fans.
Quick Facts Table
| Detail | Information |
|---|---|
| Group Name | cosmosy (코스모시 / コスモシー) |
| Number of Members | 4 |
| Members | Himesha, De_Hana, Kamión, A’mei |
| Nationality | All Japanese |
| Debut Date | December 31, 2024 (pre-debut single) |
| Official Debut | April 11, 2025 |
| Agencies | NTT Docomo Studio & Live; Sony Music Entertainment Korea |
| Fandom Name | eye=sy |
| Oldest Member | Himesha |
| Youngest Member (Maknae) | A’mei |
| Group Concept | “COSMOS of Youth” |
| Primary Languages | Korean, Japanese, English |
Table of Contents
Who Is cosmosy?
cosmosy is a global girl group that trains in Korea and records in three languages. The members are all Japanese, but the group operates inside the K-pop system. Their music mixes K-pop production with J-pop and global pop elements, and their lyrics move between Korean, Japanese, and English.
The group was created with creative direction from SINXITY, a director known for work with BLACKPINK and LE SSERAFIM. The project brings together NTT Docomo’s entertainment arm and Sony Music Korea, giving cosmosy a dual base in Japan and South Korea.
cosmosy does not present itself as a J-pop group working in Korea. The members describe their work as K-pop, and they point to K-pop’s performance style and global reach as the reason they chose this path.
Early Life and Education
Himesha
Himesha was born Aoyagi Himeka on January 23, 2006. She is from Japan. Public profiles list her birthplace as Nagoya, Aichi. She began dancing at age three and trained seriously in hip-hop dance before joining the group.
Her formal education beyond pre-debut training is not publicly documented. No verified school or university information is available.
De_Hana
De_Hana was born Yoshida Hana on May 10, 2006, in Nara, Japan. Before K-pop training, she studied abroad and appeared in musical theater. Her dance background began in musical theater rather than K-pop choreography.
She later competed on PRODUCE 101 JAPAN THE GIRLS and was eliminated in episode 10 at rank 30. Her secondary education is not publicly confirmed.
Kamión
Kamión was born Kamio Ayano on July 18, 2006, in Osaka, Japan. She also appeared on PRODUCE 101 JAPAN THE GIRLS, where she was eliminated in episode 10 at rank 24. She is described as the group’s strongest Korean speaker and often acts as the team’s “Korean teacher”.
No publicly verified information is available about her school or university education.
A’mei
A’mei was born Nakamura Mei on October 30, 2007. She is from Tokyo, Japan. She is the youngest member and the only member born in 2007. She started dancing at age three and later worked as an instructor at a dance studio.
Her pre-debut training was focused on dance. She has named Dua Lipa and BLACKPINK’s Lisa as inspirations. Her formal academic background is not publicly available.
Career Journey
Pre-Debut Career
cosmosy was introduced through a teaser campaign in December 2024. The group’s pre-debut single, “zigy=zigy,” was released on December 31, 2024. The track mixed Korean, Japanese, and English, and it introduced the group’s futuristic, slightly mysterious visual style.
Before joining cosmosy, De_Hana and Kamión had public recognition from PRODUCE 101 JAPAN THE GIRLS. Himesha and A’mei came from dance backgrounds. The four members trained together in Korea before debut.
Debut and Rise to Fame
The official debut single, “Lucky=One,” arrived on April 11, 2025. The song is sung entirely in English, a deliberate choice aimed at the global market. The group performed on Korean music shows and held a pop-up in Seoul during the promotion period.
cosmosy’s first major international appearance came at KCON LA. They performed on the Toyota Music Den Stage and covered BLACKPINK’s “How You Like That”. The group also appeared at Anime Expo in Los Angeles, where they taught a dance workshop.
In 2025, cosmosy was named to Google’s “Global Breakout Searches” list in the K-Pop Debuts category. The group was the only Japanese act selected in that category.
Recent Activities
In September 2025, cosmosy released their first EP, the a(e)nd. A pre-release single, “Physics ~ 物理的な ~,” arrived in November 2025 ahead of a second EP planned for March 2026.
On September 6, 2026, cosmosy won the “Global New Wave” award at the 2026 SPOTV K-POP AWARDS, their first trophy from a domestic Korean ceremony. Later that month, the group was scheduled to perform at SBI MUSIC CIRCUS HOKKAIDO 2026 in Sapporo, with Kamión and De_Hana serving as special MCs.
The group has also opened a participatory campaign around an unreleased song titled “Give Me Love,” allowing listeners to decide whether the track receives a formal release.
Family Background
cosmosy’s agencies have not published family details for any member. No verified information is available about parents, siblings, or relatives. The members have kept their family lives private. Any claims about specific family occupations or hometowns beyond what is listed in public profiles should be treated as unverified.
Height, Weight, and Physical Appearance
| Member | Height | Weight | Blood Type | Zodiac | MBTI |
|---|---|---|---|---|---|
| Himesha | Not publicly confirmed | Not publicly available | Not publicly available | Aquarius | ENFP |
| De_Hana | 166 cm (5’5″) | Not publicly available | Not publicly available | Taurus | ESFJ |
| Kamión | 156 cm (5’1″) | Not publicly available | Not publicly available | Cancer | ESFJ |
| A’mei | 170 cm (5’7″) | Not publicly available | Not publicly available | Scorpio | Not publicly confirmed |
Himesha’s exact height has not been released by the agency. Fan estimates exist, but they are not verified. De_Hana, Kamión, and A’mei have listed heights in public profile databases. Weight and blood type are private for all members.
Relationship Status
No member of cosmosy has publicly confirmed a romantic relationship. The group’s official channels have not shared relationship information. All four members are focused on group activities as of 2026. No publicly verified information is available on this topic.
Net Worth and Income Sources
Individual net worth figures for cosmosy members are not publicly available. No verified financial disclosures exist. K-pop agencies do not typically publish artist earnings, and rookie groups rarely have confirmed net worth data.
Income sources for the group likely include music releases, performances and festivals, brand partnerships, and platform content. These are standard revenue streams for K-pop acts, but exact figures are private. Any specific dollar amounts circulating online should be treated as speculation.
Social Media Profiles
| Platform | Handle | Link |
|---|---|---|
| @cosmosy_ig | instagram.com/cosmosy_ig | |
| X (Twitter) | @cosmosy_x | x.com/cosmosy_x |
| YouTube | @cosmosy_official | youtube.com/@cosmosy_official |
| TikTok | @cosmosy_tk | tiktok.com/@cosmosy_tk |
The group’s official accounts are managed by the agency. Member-specific personal accounts are not publicly active under verified names. Fans should rely on the official group channels for updates.
Awards and Achievements
| Year | Award / Recognition | Result |
|---|---|---|
| 2025 | Google “Year in Search” – Global Breakout Searches (K-Pop Debuts) | Selected |
| 2025 | Genius Japan Annual Chart – Best Artist and Best Song nominations | Nominated |
| 2026 | SPOTV K-POP AWARDS – Global New Wave | Won |
The Google recognition placed cosmosy among the most-searched new K-pop acts of 2025. The SPOTV award was the group’s first domestic trophy in Korea. The Genius Japan nominations are listed in Korean media reports, though the final results were not publicly confirmed in the sources reviewed.
Interesting Facts
- All four members are Japanese, but the group identifies as K-pop and trains in Korea.
- The fandom name is eye=sy, which the group explains as someone who meets cosmosy’s gaze and learns to love themselves.
- De_Hana can do a Mickey Mouse impersonation that surprises people who meet her.
- Kamión is called the team’s “Korean teacher” because she chats so much that her Korean improved quickly.
- A’mei worked as a dance instructor before debut and started dancing at age three.
- Himesha has trained in hip-hop dance since childhood and is the group’s oldest member.
- The group’s debut single “Lucky=One” is entirely in English, while their pre-debut track mixed three languages.
- cosmosy was the only Japanese act selected for Google’s 2025 Global Breakout Searches in the K-Pop Debuts category.
- The group’s creative director, SINXITY, worked on BLACKPINK’s debut and has directed projects for LE SSERAFIM and other major K-pop acts.
- Kamión and De_Hana both competed on PRODUCE 101 JAPAN THE GIRLS before joining cosmosy.
FAQ Section
1. How many members are in cosmosy?
cosmosy has four members: Himesha, De_Hana, Kamión, and A’mei.
2. When did cosmosy debut?
The group released its pre-debut single on December 31, 2024, and made its official debut with “Lucky=One” on April 11, 2025.
3. Who is the oldest member of cosmosy?
Himesha is the oldest member, born on January 23, 2006.
4. Who is the youngest member of cosmosy?
A’mei is the maknae, born on October 30, 2007.
5. Are all cosmosy members Japanese?
Yes. All four members are from Japan. The group trains in Korea and operates within the K-pop system.
6. What is cosmosy’s fandom name?
The fandom name is eye=sy.
7. What does the name cosmosy mean?
It comes from “COSMOS of Youth.” The name references the cosmos flower and the idea of youth and growth.
8. What agencies manage cosmosy?
The group is managed by NTT Docomo Studio & Live and Sony Music Entertainment Korea.
9. Has cosmosy won any awards?
Yes. The group won the Global New Wave award at the 2026 SPOTV K-POP AWARDS and was selected for Google’s 2025 Global Breakout Searches.
10. What is cosmosy’s net worth?
Individual and group net worth figures are not publicly available. No verified financial data has been released.
Conclusion
The cosmosy members profile 2026 shows a group that has moved quickly since its December 2024 introduction. Himesha, De_Hana, Kamión, and A’mei bring different strengths: dance training, musical theater experience, survival-show recognition, and multilingual communication. The group has already performed in the United States, won a domestic Korean award, and earned a place in Google’s global search data.
For fans building a profile of the group, the verified facts are clear. cosmosy is a four-member, all-Japanese K-pop act under NTT Docomo Studio & Live and Sony Music Entertainment Korea. The fandom is eye=sy. The music moves across Korean, Japanese, and English. Details about family, relationships, and net worth remain private, and that privacy is part of the group’s professional presentation.
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