Synopsis

Ryouhei Sakita is living a tough life. His dad, who is a gambler, has so many debts that he ends selling his son to pay them. The buyer... a mysterious woman who gives him a challenge: to initiate her 5 daughters into sex! How will he fare against all of them? How long will he have to "work" in order to pay his dad's debt? (Source: BakaBT)[Written by MAL Rewrite]