TFW you will never have an anime where the Gary-Sue knows he's a Gary-sue and uses that knowledge to hook up side bros with the excess girls.
Seriously, I think it would be a good spin on the usual harem plot.
If everyone was allowed to be happy then he would no longer be a Gary Stu. A Sue/Stu typically sucks all the screentime, development, and potentially good scenes from the other characters just with their presence.
That would just be a character with really good luck. Binbougami Ga! is about an MC with a broken luck stat, so they're perfect at everything. However, she learns to share her good luck with other people.
Well that would kinda be the point, he can't be happy because all the excess bitches keep on getting in the way and he doesn't want a massive catfight. Sides wouldn't it be at least good if the runner up girls found their own man too?
what if chichiko and millfeulle are face to face? luck rate broken and the universe explodes?