Yaoi manhwa about being transported into a novel to save the 2nd male lead (ML) that's blonde from suicide, mc is black haired.
Saw on reels but was unable to return to it, pls help
It may be or may not be this one
https://www.mangago.me/read-manga/love_supremacy_zone/
One of the few manhua i am willing to read.
Great plot, progression, and art. Perfect.