for someone who didn't read the novel, is this worth reading? was the ending good???

For me no: also because when the things starts to be interesting, the end…
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yk what, you're right ╥﹏╥ like wdym it ends like this, i need more lovie dovie scenes and also their life as a couple

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If you like an evil yet somehow funny character yes. Personally, I like this manhwa cuz the author did not sugarcoat shit, they really showed what MAY happen to a person if their mental illness is neglected. Plus points to the fact that the author didn't use the ML's mental illness as an excuse for his behavior, in fact, the ML knows he's an asshole and freaking USED his backstory and disorder to manipulate the MC The art is also good, if you're interested there's a novel with 10 volumes, the manhwa is currently only in volume 1. The art is also good, I really appreciate the artist's efforts.