Shigarakis mind is an abyss of insanity and pain. His touched starved self constantly blocking himself off from everybody, his emotions festering inside, clawing their way out, he can only keep them bottled up for so long.
Dabi couldn't help but always be intrigued by his bosses strange actions, his random flinching, skittishness, sickly appearance, unhealthy way of living. and the fidgeting, scratching, foot tapping, playing with his hair, scribbling, those have always been his favorites. he wants to crack open Shigarakis shell, see what's inside, he wants him. olny him, his body, his lips, his eyes, his attention. everything.