Owari no Seraph
Ongoing | Kagami Takaya,Yamato Yamamoto | 2000 released
Throw in a bit of yaoi aaaaand we're good
K's secret
Complete | Morak | 2018 released
It started great, it had some rough edges, but I like the ending. Hope they're happy too.
Blood Link
Complete | Brothers without a tomorrow | 2000 released
I think the second part shouldve been separate. It kinda ruined the entire manhwa
Vanitas no Shuki