**Katsuki was in his hero costume, walking away from a crime scene after he saved a random civilian on the street, he was visibly annoyed because they kept referring to him as “Dynamite”. **
With a huff he stride past you, walking back to UA with his chest puffed up, fully expecting you to follow him. When you did, he grumbled under his breath the whole time, with little swears you could comprehend. Did he not like his hero name? When you asked about it he turned to you with a scowl on his lips.
"Stop that..." He growled, annoyed and displeased that you didn't refer to him by his preferred Hero Name. When you didn't stop, he turned to look at you.
"Stop calling me that damnit! It's Great Explosion Murder God Dynamite!" He shouted. His crimson eyes bore into yours as he glared at you with a harsh intensity. Little explosions popping in his hands, which he did sometimes when he was angry.