Room Ver.2.0.5 by SORAREVO - Adult Sex Game

Your protagonist is Shinya, a man who inherited this apartment building from his parents.
One day, a girl named Yume Hiiragi moves in from the countryside.

Yume Hiiragi, Age 22; an aspiring broadcaster who just moved to the big city for work.
She's kind to everyone, stylish, and lovable.
The "safe and secure" apartment her parents chose for her first time living alone...happens to be the one Shinya owns.​