anything like Tumbling, basically
bromance is nice too lmao or just strong, solid friendships
Gokusen (all seasons)
School 2013
Shut up flower boy band
Crows zero
Jungle Fish 2
Ji Soo's character in Angry Mom kdrama
Definitely School 2013. Also School 2017, Heirs, and Sassy Go Go to a lesser extent.
Adolescence Medley
school 2013!
I agree with all dramas mentioned. One more to add: Yankee-kun to Megumi-chan. Not a much of bromance as main characters is a boy and a girl but they have nice friendship
Also Hot Young Bloods