名門の全寮制大学を卒業したとき、彼女は違っていて、セクシーでした

I am a university student who goes to college in Tokyo. I moved to Tokyo alone from the countryside and am staying at a clan's house, and I'm kind of curious about the clan, A-chan. A-chan used to be a serious and normal college girl, but when she graduated from college this spring, she rapidly matured in appearance, and I am very conscious of her as an onna...