The rapist didn't say anything when he asked him if he raped other girls before, so he clearly did it before... and he just let him be?! like "hey dude, that's wrong" "oh ok, sorry" wtf dude...
honestly the mc is a bit harsh on the guy, he just wanted to have some fun, why everyone these days want to ruin the fun of other for no reasons ???
beside the girl was asleep okay, but clearly doesn't seams to be so against easy to get gacha goods