It's been a month since he broke up with his girlfriend, with whom he was in love. Unmotivated to do anything, Yusuke spent every day sighing. His sister-in-law Mirai, who had been watching him in this tragic state, called out to him to encourage him. "I'll do you such a good thing that you'll forget about your ex-girlfriend," she said, smiling gently and exposing her breasts. Yusuke swallowed his saliva at the sight of her voluptuous, swaying breasts. He knew it was wrong, but he reached out...