I would think Aku and HIM would keep Chi's and Mimi's creations / births and the methods behind them a secret, so I doubt that's history Underworld Public High School curriculum would cover. I also see the slice of life thing as being unlikely, because I doubt Mimi would follow Junior back to school, at least not with her current attitude toward him. She is, after all, trying to get away from Castle Grimskull, if she's not trying to recover her powers. And if Mimi doesn't go, Chi doesn't go. As for Minnie, she's already stated to be getting home schooling, although Mandy states she might regret having done that to her. That means the only one maybe going to a public school is Junior himself. No harem, and no possibility of such.
Vader on the Iron Throne is worth a few chuckles. But it's no House attitude. Where's Hugh Laurie when you need him?
If Mimi does fall, which seems likely, Junior could probably anchor himself with tendrils from the Nergal, and use a few more to catch her. Mind you, it wouldn't be as dramatic as leaping to do so. But he can still catch himself and Mimi with tendrils, rather than wings. Wings would be cool, though.
I imagined two things in response to the many posts since my last one:
1. Junior's wings vanishing like Happy's aera used to in Fairy Tail and
2. Mimi on Junior's back, going 'ohm nom nom' on his head like Index or Sadaharu (Gintama). Depending on how hard she bites, it could be Sadaharu. Either way, Junior muttering 'misfortune' deadpan at that point would be pretty funny, in my opinion. And Minnie snickering 'cause Junior gets what he deserves, in her opinion.