Responses
The uke is wayy older than the seme. Seme was literally his fan I think, when he was a child and the uke was already a well established artist
Only one I can think of is Dear My Killer Tune. If this isn't the right one read it anyway it's really good!!
Omg it is that one THANKYOUUUU I'VE BEEN SEARCHING SINCE YESTERDAY
Guys there's this manga actually I haven't even read ts but as far as I remember there was an older artist I think he was a guitarist? Singer? Smth like that and the top was his fan since he was a child I think? Omg I really wanted to read ts but it disappeared from my list