Guys before complaining about the actitude of the Mc you should put on his shoes.
I hate the ignorant and stupids Main character just as you but I think this guy is just really in bad position right now and doesn't know what to do.
For example.
He can't let Ayumi kiss him that would trigger the power, he can't really reject her either cause that would trigger the power too.
He tried to talk about the misunderstanding of the play but Ayumi didn't listen.
Her only ally Jindou who was the only person he could really trust now is acting strange and doesn't even want to talk with him.
After all the sexual harassment she did I think is normal for the MC to not understand how strong was his choice in the play.
That's it I hope that putting that into perspective could help to understand the guy.
Sorry if there's any misspellings English is not my first lenguaje