This series is based on a novel originally by Fallnick.
Sadistic Beauty is similarly the same. The author for the series is WOO Yeonhui.
Lee Geumsan is just the artist for both series. KINOKO (II) is also helping out with the art for this series only.
but doesn't an artist get to choose what they work on? they're relying on someone else for the actual writing, but they at least know the general plot before they choose to start collaborating or adapting. don't the similarities between all the works they've done feel... too obvious to be ignored? (not that we'd ever know for sure without straight up asking, ofc, so really i'm just speculating)
based on this + Sadistic Beauty Original Flavor + Sadistic Beauty BL, i'm gonna hazard a guess that the author just really, really, really wishes shitty men would get what's coming to them, but 10x worse. i don't even think it's a sex thing, it feels like it's just a revenge thing.
and then there's Sadistic Beauty GL, which is just a nice sweet cute story with some bdsm in it lmao