Nah because watch the author pull some 180 reverse shit on Cain and be like "Oh he was actually planning to murder and eat Jooin all along haha" to make Yahwi seem like a good option or something. I swear Yahwi's character is so irredeemable at this point that the only way the author can make Joon x Yahwi make sense is to fuck up Cain's character so badly that Yahwi seems like a god in comparison. Typical bad writing.
Tbh the little brother is such an underrated character, he's precious omg