Atari Nikki - Onnanoko ni Nacchau Hanashi

Chapter 3: Atari and Classmates
Chapter 2: Atari and Keiji
Chapter 4: Atari and Class President
Chapter 2: Atari and Keiji
Chapter 4: Atari and Class President
A boy's older brother gives him a potion that turns him into a flat-chested school girl.
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