He can understand the idea of 'what if' and that being apart from their god is not good but still-

"Tch-"

Making such an irritated noise he crosses his arms.

"You won't be able to do anything much with that. You heard that only shinki can kill ayakashi, right? If you want to do something- haven't you learned how to make a borderline yet?"

Yukine himself went a while without knowing how, but still, the new shinki should have been learning that-!