KPOP 5th generation · TITAN CONTENT
AtHeart
エトハート / 앳하트
AtHeart take their name from joining the at sign to the word heart, and the concept is about building a world together with the people watching.
- 2025DebutAug 13, 2025
- 7Members
- 5thGeneration
- HeartbeatFandom
Last updated:
01
In 30 seconds: AtHeart
The pre-debut Good Girl leans hyperpop, Plot Twist turns dreamlike, and the 2026 double single moves toward R&B.
Start here for a new girl group aimed outward from the beginning rather than at the home market first.
02
Key facts
- Group name
- AtHeart
- Reading / Hangul
- エトハート / 앳하트
- Company
- TITAN CONTENT
- Debut date
- August 13, 2025
- Days active
- 444 days (1 year, 2 months)
- Debut song
- Plot Twist
- Generation
- 5th generation
- Fandom name
- Heartbeat(ハートビート)
03
Member guide
Profile comparison
| Members | Birth date | Blood type | MBTI | Nationality | ||
|---|---|---|---|---|---|---|
| アリン | 2007-07-01 | 19 | 164cm | Not disclosed | ISFJ | South Korea |
| ミチ | 2007-05-06 | 19 | 174cm | Not disclosed | ENTJ | Japan · United States |
| ケイトリン | 2007-07-24 | 19 | 162cm | Not disclosed | INFJ | Philippines |
| ボム | 2007-11-26 | 18 | 166cm | Not disclosed | ISFJ | South Korea |
| ソヒョン | 2008-09-12 | 18 | 162cm | Not disclosed | ISTP | South Korea |
| アウロラ | 2009-07-04 | 17 | Not disclosed | ENFP | Japan | |
| ナヒョン | 2009-09-03 | 17 | 172cm | Not disclosed | ISTP | South Korea |
Ages are as of 2026-10-31.
Selected releases
04
Start here
Follow a few songs from the starting point to the group's current sound.
Good Girl (AtHeart) MVGood Girl is the pre-debut single, bright and fast, with all seven sketched quickly.
Plot Twist MVPlot Twist is the official debut, dreamlike in the writing and memorable in the choreography.
Butterfly Doors MVButterfly Doors is the newer half of the 2026 pair and the most refined thing so far.MVView in JapaneseDance PracticeView in JapanesePerformanceView in JapaneseLiveView in JapaneseStageView in JapaneseAudioView in Japanese
View all official videos →05
From debut to now
- 2024Member reveals for AtHeart began as the new girl group of TITAN CONTENT, building recognition as a globally minded rookie act.
- 2025After releasing Good Girl (AtHeart) as a pre-debut song, they debuted on August 13 with the 1st EP Plot Twist. Aurora took a break from promotions for the record.
- 2026Shut Up and Butterfly Doors widened the range from the youthful feel of the debut EP towards a slightly sharper pop and a dreamlike sound.
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Achievements
Key milestones
Verified information
Verified English information is not yet available for this section.
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Official links
Official site
Official social accounts and platforms
Shopping guide
Verified English shopping links are not yet available.
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KPOP DISCOVER's AtHeart note
AtHeart sits on hyperpop built from a multinational line-up, reaching out towards dreamlike sound. Arriving as the first K-pop girl group from TITAN CONTENT, the seven-piece takes its name from joining At, or the at sign, with Heart, carrying the idea of building a new world while staying connected to the hearts of fans.
The ways in are Good Girl, Plot Twist and Butterfly Doors. Good Girl gives the bright hyperpop of the pre-debut stretch, Plot Twist the fantastical pop feel of the formal debut, and Butterfly Doors the more dreamlike expression closer to R&B in 2026. The members come from Korea, Japan, the United States and the Philippines.
Aurora has been on hiatus for health reasons since July 2025, so it helps to keep the official line-up of seven separate from the activity carried mainly by six since Plot Twist. Good Girl into Plot Twist and on to Butterfly Doors spans the pre-debut work through to the present range.
Editors' take Good Girl / Plot Twist / Butterfly Doors — the span from multinational hyperpop to dreamlike R&B in three songs, from a seven-piece out of TITAN CONTENT.
Trivia worth knowing
Company
AtHeart sit under TITAN CONTENT and are seen as a globally minded rookie act assembled by staff with K-pop production experience.
Composition
Members trace roots to South Korea, Japan, the United States and the Philippines, so the spread of languages and nationalities is part of the appeal.
Debut
Good Girl was the pre-debut song and Plot Twist the centrepiece of the formal debut EP, and holding those two apart keeps the sequence straight.
Activity status
Aurora has been on hiatus for health reasons since Plot Twist, so the seven-member count and who actually takes part are two different things.
Video
Comparing the music video, the performance video and STUDIO CHOOM for Plot Twist brings out both the softness of the song and the precision of the dancing.
Recent releases
Butterfly Doors arrives with a music video, a performance cut and a live session, covering song, choreography and vocals from three directions.
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Japan activity score
KPOP DISCOVER original metric
No. 163/ 241 groups
No. 163 of 241 groups with recorded activity in Japan (top 68%)
- 0Japanese releases
- 0Japan-related tracks
- 2Members from Japan
- 0Official Japanese accounts
The denominator is the 241 groups, out of 564 covered by KPOP DISCOVER, whose raw score reaches at least one point. The score adds 10 points per Japanese-market release, 3 per Japan-related track, 12 per member from Japan, and 8 per official Japanese account. Japanese-market releases carry the most weight because they are the most direct evidence of activity; related tracks add track-level detail; members from Japan stand for Japanese-language communication and continuity; official accounts stand for a permanent point of contact. The weights are an editorial judgement, not a statistical optimisation, and the ranking tracks release volume in Japan closely. Source: releases, tracks, members, and official links recorded by KPOP DISCOVER (updated 2026-10-29).
How this score is calculated →View in JapaneseFrequently asked questions
What defines AtHeart?
The pre-debut Good Girl leans hyperpop, Plot Twist turns dreamlike, and the 2026 double single moves toward R&B.
Why should a new listener start with AtHeart?
Start here for a new girl group aimed outward from the beginning rather than at the home market first.
Which songs should a new listener try first?
Start with Good Girl (AtHeart), Plot Twist, Butterfly Doors, then continue to the official video index.