does anyone know??

I read this manhwa(I’m pretty sure it’s manhwa) and it was about a grandson who is trying to find his grandfathers crush. It’s a bl, and it’s basically a flashback of the grandfathers life and he used to be a musician/singer along with this other guy in a bar which was mainly for people that weren’t that accepted by society. It’s shounen ai and they find each other at the end after leaving one another. Thanks!!