That could also explain the "low libido" thing the doctor told them. While funnt because it pissed off Ivan, it didnt really make sense to me. We obviously know that Hen and ivan do It constantly, and I'm pretty sure if the imprint wasnt there then hen would probably hold off on having sex so often.
So rather than the owner of the bite not having a matching libido for Hen, it would make sense that the owner of the bite just hasn't had sex with him! And this whole time the bite has been satisfied with another snake clan member.
True, I didn't think that far but could be true doe they've been doing it a lot but the low libido thing just doesn't make sense （￣へ￣）so we can expect many episode and drama to come (๑•ㅂ•)و✧
I believe the real owner of hyun's imprint is Alek, actually I reread this thing today n just realized there's a part in the comic that says that the owner of imprint could sense the pain that happens on the imprinted (Giuramento chapter) and all along the only person who got a heart racing all along is Alek.