He's the king. He can do whatever he wants.

You know, looking at it Marcille was probably the one that's into it the most.
Also is that Frieren on lower right? There's no elf with that hairstyle on Kabru's group.

Rathurue said in comment #2610896:

Also is that Frieren on lower right? There's no elf with that hairstyle on Kabru's group.

She's making the face. It's gotta be her.