Not yet complete in the manhwa but Codename March is really good. The novel is already complete and the ML's redemption arc is sooo satisfying (prob one of the best out there) and the MC doesn't just accept him immediately. The depiction of depression on the MC's side is also really, really good and realistic (as much as realism is possible in BL but it's really good).
Manhwa: https://www.mangago.me/read-manga/march_1/
Novel (this is where S1 ends): https://springofromance.com/chapter/m-43/

Can u pls recommend some bl manhwa that has a satisfying chasing arc? Pleaseeee