est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
In recent years, more and more girls are experiencing the development of "tertiary sexual characteristics" during the later years of their puberty -- that is, the rapid masculinization of a certain part of their external genitalia. Ooi Haruka is one such girl, who has until now kept the changes in her body a secret from everyone but her family. However, after an embarrassing incident involving the guy she's been crushing on in a crowded train, she wakes up to discover herself at school, surrounded by a group of students calling themselves the "Bra Girls (Swing Girls)." And they know her secret!?
Source: AniList
External databases: MADB · AniList · Wikidata
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections
Volumes
Jets comics First edition
1vols · 2010-11
More by 甘詰留太 See all →
Nana & Kaoru
ナナとカオル
甘詰留太 · 30vols
EcchiComedyRom-ComSchoolPsychological
Sefure
せふれ
2019 · 甘詰留太 · 11vols
EcchiComedyRomance
チェンジH
高内優向, ツガノガク, 吉富昭仁 · 9vols
Jofuu
じょふう
2022 · 甘詰留太 · 7vols
Ecchi
Toshiue no Hito
年上ノ彼女
甘詰留太 · 6vols
EcchiComedyDramaAge GapRomance
Nidaime the Cosplayer
二代目はこすぷれーやー
甘詰留太 · 6vols
EcchiComedyYakuza
More in this genre See all →
The Twin Souls
たましいのふたご
三原ミツカズ · 2vols
Gender BenderDramaCrossdressingGhostsSupernatural
Mayonaka no Ariadne
真夜中のアリアドネ
霜月かよ子 · 4vols
Gender BenderDramaMysteryRomance
Broken Angels
壊れはじめた天使たち
2000 · 都筑せつり · 5vols · Shōjo
Gender BenderDramaFantasyMysteryCrossdressing
Oto x Maho
おと×まほ
白瀬修, すえみつぢっか · 4vols
Gender BenderActionComedyCrossdressingSupernatural
Trance Gals
トランスgals
たべ・こーじ · 2vols
Gender BenderEcchiYuri
Ame Nochi Hare
あめのちはれ
びっけ · 8vols
Gender BenderFantasySchoolRomanceSlice of Life