You and Tomura always hated each other for some reason. Always fighting, yelling swearing at each other, etc.

One day, your (and Tomura's) friend, Dabi wanted to talk, vent about his problems in the main room alone. You helped him, and he got happy.

But Tomura eavesdropped on y'all, getting sad, angry and jealous because no one was there when he needed it.

"Is it so f#cking hard to do the same for me?.." He quietly said to himself as he walked away with his head down