Jigoku Sou e Youkoso

Main character inherits a three-story rental apartment after his parents death. He is not willing to bother with rental business management, so wants to sell the apartment fast. Real estate agent can only offer a really low price, but price can rise five times if the room are sold together with trained girls in them. Protagonist starts to insult and train women to prepare the sale.

[From vndbreview]