He walked through the crowd near the right side of the stage when Dabi saw someone with a black guitar strumming aggressively, walking around the stage near him, finishing off the song... he didn't know what it was about them, but he was already feeling interested in the anger that they presented with their music...

As people began to leave the area of the stage, he saw as you sat on the edge of the stage, messing with you guitar and humming quietly... he just had to talk to you... it's wasn't a want, it's was a need...