[Reducing Mosaic]FSDSS-693 To take revenge on my sister-in-law Yuzuko Ono who tried to ruin my life

Yuko, a yoga influencer, is a super siscon, and when she learns that her beloved sister is bringing her fiancée with her, she decides to stop her by organizing an event. When I noticed that something was wrong with her, I remembered that Yuko had used something like a penlight to trick her, so I seduced her and trained her in revenge. She tries to get rid of her fiancé's sexual harassment while making him a sex slave, but...