Responses
Oh sorry, i never read the novel so i don't really know but many people said Yeonwoo is Geon's adoptive sister and they have a family bond but what' shown in manhwa make it hard too see as just a 'family'. Even in the recent chapter Geon literally blushing so hard and acted weird when he wanna put the ring to save Yeonwoo' soul.

Tbh Yeonwoo and Lee Geon's feeling are too strong, it's hard to see it as just a family. They literally willing to sacrify anything just to save each other. I never read the novel so I don't know but I wish both of them to be happy. ╥﹏╥ oh btw... Tartarus looks like Koro's sensei angry face lol