even his full name means wolf in latin language (⊙…⊙ )
and he called jooin "master" when they met ╮(￣▽￣)╭
He definitely is, he even has a collar on the cover art
And the author has already made some fantasy mix on their other BL so it can also turn out to be more fantasy like than we expected, like a huge plot twist
can't wait for that ヾ(❀╹◡╹)ﾉ~
I saw theory in tiktok that cain might be a dog in his past life then reincarnated as a human HAHAHA. After I read the previous chapter when cain said that he always sleep on the floor, that makes me think about it. But yeah its just a theory, maybe theres a new revelation in the next next chapters.