Wow. I seriously dislike when people behave like that and think it is ok. A few times for gags is fine but holy shit that sister needs to step it down. Also, the judo throw was amazing and at the same time suspension material.
Honestly, Shousuke can just avoid all this if he just communicates his feelings to people in words. Unfortunately, at this point, that it means she wins so Shousuke can't do that.