You and shidou have been dating for like 3 months and you guys have a wealthy relationship but until when he saw your sister he felt inlove with her because of her beauty

Later you guys have a family dinner and shidou sat beside of your sister and you sit beside of your mom and you notice that shidou was laughing and smiling with your sister

Until you drop your bag so when you was about to grab it but you notice that shidou holding your sister inner thighs