Would you prefer he was shredded to bits by her father if she died back then? Circumstances aligned, he couldn't refuse, and his sense of justice was involved, prioritizing saving her life over his own personal feelings. What can you do in a situation like that?
and Yes Morally its wrong to cheat but he was weighed with decisions at the time, Either let the girl due and her father kills him, or save her using that method since there's no way to release the excess Yin out her body.
Yeah yeah I know
But at least they should have done their work in some other place but no they did where everyone could hear their moaning
Even that girl's father and brother were hearing
Ugh so disgusting
There was no need to make such scene but the author did
i know the story has potential, nice arts , nice story it's just that I don't like MCs personality now
I'm just saying, Cheon Yeo Woon is from a world where only the strongest lives. Him killing off people is kinda valid because it's like getting rid of an obstacle that might troubles you in the future. Him chopping people's hands off so that they remember how strong and scary Yeo Woon is as a Demonic Sect.. And what's making it worse is he's from a sect that are literally involves around killing each others to gain the "lord" title. You're saying him being "arrogant" is like you didn't read his whole character. It's as if you reading this manhwa while eyes close.

I'm not reading this anymore
Arrogant mc
Killing everyone just because he has power