I looked at the raws up to ch 20. I can't read Korean so this is all based on the pictures. Looks like ml isn't as bad as he seems? I know y'all are gonna simp for him in ch 9/10 cause he's shirtless and those abs ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄ .
In ch 13 it looks like ml goes cray cray and this dark slime goo thing is all over him (i'm guessing that's the darkness stuff inside him). Mc does this shock thing (i'm guessing purifying?) and he faints. He wakes up back normal and has a conversation with mc. They sit across from each other in a room and talk. Mc brings her hand out and he shakes it so i guess they settled on a deal? Mc then leaves with him. There's this brown hair knight that's part of the group and he clearly makes it known to mc that he hates witches(?). I think the brown hair guy will be the new hate target for most readers. Ml still acts very normal so he gucci. They make it back to the castle and some of the maids look hella sus. The maids prepared a room filled with rose petals and all red for mc and ml (idk if they got married or something, probably part of their deal back then she talked to him). they spend the night together (just sleeping no smex). stuff happens during the day and it looks like ml gets mad on behalf of mc and wants to punish someone(?) but mc stands up and says something. Mc then turns into a bunny and runs under the bed. ml tries to grab her but her just kicks his hand away and he looks all O.O
So far based on the pics ml looks/acts fine and i think there'll be other characters readers will hate more.
Pls give this a anime remake that follows the entire story like fruits basket!!