I set off to Tokyo to start a business with a friend but failed; they ran away and left me with the debt. With no other options, I had to return home. Here, I reunited with Akari, my best friend who lives next door, the one I had confessed my feelings to, and now she is my sister-in-law. Akari has always treated me well like that. But my brother is different; when he heard me mention the debt, he immediately kicked me out of the house. Furious, I wanted to take revenge on him by making his wife 'submit' for the three days he would be on a business trip...