Don't panic, this might be just the guy's imagination. There's one last picture who is just a doodle of discount Garry looking sadge and oof, and that's it for https://www.pixiv.net/en/artworks/148131964.

Maybe Frieren was right and cohabitation with demons (or rather youkais) is impossible. We'll see how it goes.

PS: this is not Ex-Rumia by the way, or Phantasm Rumia or Shin Rumia or whatever you want to call her, since she still has the ribbon.