Kim's Things

Ever since all the listings been wiped out earlier this year I’ve been trying to find this omegaverse bl manga that’s about a beta pretending to be an omega. I might be mixing this up but I believe the ml is alpha and a cop trying to solve a case of a serial killer who targets omegas. And if I remember right, the mc pretends to be an omega due to an incident that happened in his school day where the ml bit his neck and though he had to take responsibility for what he did.
I would really appreciate it if you could find it despite the little information I provided

Between solo leveling and omniscient reader viewpoint, which one would you guys prefer. If I'm honest I would choose orv because I seem to find it more interesting than solo leveling even thought both of them have very good plots.

I love angst. I especially love the unrequited love one's. I also like it when the mc is getting constantly getting abused by the ml until he reaches a breaking point and just doesn't care about anything in the end (don't get me wrong, I don't like it when the mc is getting raped) I hope you guys can help in giving me good recommendations