I have finished watching killer and healer only recently. And have watched all d gold dramas with two male leads. Untamed , guardian, woh, beloved enemy, you're all surrounded, highschool love on, school 2013, reply, moorim, w, Chicago typewriter, chief Kim, lost tomb series my strange friend, candle in the tomb series, signal, day n night, reborn, bloody monday, never say never, nobuta wa produce, hikaru no go etc. That's all I remember.
R there dramas with the criteria as such? N omission of a potential love interest.