Maniac Sex with the Littlest Housemate!

Chiisana Ooya-san to Maniac Ecchi!
A guy was demoted from his Tokyo office job to a meaningless peripheral job far from the city. He was looking for an apartment. The cheapest thing was a place with no telephone service and no utilities. He wasn’t even a proper tenant; it was just a room in a sharehouse. And one of his roommates was a younger girl..