Having been feminized by a suspicious drug given by his little sister, what fate will Oniichan face...!? (The manga parts of RJ247862, RJ273796, and RJ296502, bundled together!)
"BUATSUISOU," the sharehouse that 159cm tall high school student Kotatsu moved to turned out to be a BIG house where everything is BIG! Including the inhabitants which are all over 2 meters tall!
A-chan has been fretting over her small bust for many years. So, what's she gonna do about it...!? Check out what crazy antiques A-chan and her happy chappy comrades (?) get up to in their arduous plight for voluptuous bosoms!