NSFS-173 Blackmail your sister-in-law when your brother goes on a business trip

I went to Tokyo to start a business with my friends but failed, they ran away leaving me with debt. There was no other way, I had to return home. Here I met Tsukasa again, my best friend who lives next door, the person I once confessed to is now my sister-in-law. Tsukasa has always treated me so well. But my brother was different. When he heard me talk about the debt, he immediately kicked me out of the house. So angry, I wanted to take revenge on him by pressing his wife down on his groin during the three days he was on a business trip...