Uh tbh we don’t really know who Cain is. He appeared in Korea and saw Jooin and knew who he was Bc he said that Jooin was his master in their past life. Also Caine means dog so he could’ve been his pet or as loyal as a dog to Jooin.
what if he was jooin's pet but got into an accident or passed away bc of natural/unnatural reasons and his soul transported into cain's current body?? (⊙…⊙ )
You mean like a accident when he knew jooin in his past life? If that’s what you mean than that’s a good theory Bc he knows all these things about what Jooin likes
don't like what's happening... but maybe it's good for the both of them..? ..like.. if they have some time apart then yahwi can go clear his head and realize his true feelings for jooin, whether it's just lust, infatuation or love.. and while he's at it, he might as well realize his mistakes and reflect on them... i still feel like it might be too late for that now but... if he's the ml then they might end up together in the end
.. just a little question tho?? who is cain?? like.. where did he come from? why does he call jooin his master? why does he give me dark vibes sometimes?.... or is it that the author wanted to add supernatural elements (werewolf?) through him but decided against it?? *shook in trigonometry*