愛は鍵の数だけ / Ai wa Kagi no Kazu Dake / Love Is the Number of Keys
Tanuma order, whose father moved abroad and began living alone. I accidentally witness the residents’ SEX at the apartment where I moved in as a manager!
In the order that you can hide, apartment owner Osawa Sumire tells us that “This is a customs apartment, where every single night’s love activities are spreading.” From that day onwards, violets, violets of waitresses, nurse Miki Aihara and beautiful girls with sexuality come to one after another, in order of Ubu. Hairem life in order …! What?