A women's dormitory and a young guy doing managerial duties there. He replaces the real manager, his aunt, while she is abroad. (Something familiar, but not very much like that familiar show.) It's true that this guy gets lost in the last three episodes against the background of all the girls. The last three episodes have a tendency to let the girls go without him, so I think it's worthwhile to try and have a little chat with him. The pentai is based on the game, so there is not a very clear plot (especially for those who are not familiar with the game) and there is only one very short sex scene in each episode. But at least in the last episode that scene is quite unusual.