If he had 777x stat buff from his innate ability, that means when the timing is worst, it can backfired like his desire got 777x or even his lust for sex is also 777x too.
Mangaka: "Oh shit, I rewrote the introduction for Eleanor and now I don't have a way to introduce the restaurant sister! I know! I'll just make Eleanor turn evil again for no reason!"
I know this is old, but why didn't he boost his x777 skill with his boost x777 skill? It almost seems like, given the horse riding note in a prior chapter, he can just boost whatever he wants?