@Weoooo I was thinking the same, if ahegao maker had left him half way he would have become desperate for release, but she made him cum so his mind was the clearest than ever in his life.
It's hilarious but I feel like the Yandere girl could become annoying real quick. She is so "OP" that the other girls don't even have a chance to get close to him. I mean she just has to touch them and they will be quivering on the ground.
I guess we will see if the author can come up with more variations for the gags.
He shows promise as a Shiro-type harem protag rather than the usual spineless Yuuki Rito type. And judging from the flow of the story there is a posibility of him choosing just one girl, looks good to me.