I think we're of the same mind kinda. Noma's annoyance towards those things might be because of her hunger/being shafted by them. Kitami just assumed she was like him in despising aliens. While she just needs him to chat with and serve up her meals.
Kinda weird moment with the harassment. Weren't Mirai and Shouko fighting in that battle manga parallel world. They also weren't scared of the ghost from earlier either.
Hiroi's relationship with the evil spirits could be it's own spinoff. We really need an isekai chapter where Hiroi is just making friends/ drinking with everyone.
I think Yuuki came to visit Marie because she heard she changed. Like she stopped doing all her evil stuff. Then Marie starts "hunting" again, laments not picking up a man( in Yuuki's eyes), and is pushing Emile and herself around. That's why Yuuki killed her, she probably intended to murder...