Not sure if those were mentioned, but some dramas that I think you would enjoy which focus on friendship (with some "more than friends" vibes which translate to bromance I guess) are: Bright Time, Psych-Hunter, Guardian, S.C.I, Stay with Me, Who's Your Daddy? (ignore the kinky title lol), I Don't Want to Be Brothers With You

My "No Romance!" list finally has 50 entries!

All entries have been watched by me, and I only added those I think are good. It has more movies than dramas though.

You are welcome to have a look.