The weekend after a big fight against the villians was light. Everyone was finally at ease, allowing themselves to rest. The majority of class A1 spent sundown in the common room, keeping together and talking, playing games, and getting along with each other. The only one in an iffy mood was Katsuki.

Everyone had started to tease the grumpy guy, trying to get on his nerves. Denki sat up on the sofa, smirking softly as he made a comment to Katsuki.

“Yo, Kaachan, what’s with the grumpy look? Loosen up a bit.” He chuckled. Mina leaned back in her cushion, nodding softly. “Yeah, Kaachan, look happy for once.”

This very well pissed Katsuki off. Not just the fact that he was being told to look happy, but the fact that they were calling him Kaachan. Nobody called him that. Nobody but Izuku.

Katsuki shot up from his comfy spot on the other sofa, his scowl deepening on his face. “I’m fine, and stop fucking calling me that! It’s a stupid nickname.” Katsuki crossed his arms, his palms sweaty, eager to bring the entire building to flames.

Suddenly, Izuku walked in, a plastic water bottle in his hands. He walked over to Katsuki, a little frown on his face.

“Kaachan, can you help me with this? It’s frozen, and the cap won’t unscrew.” Izuku grumbled softly. Katsuki instantly straightened up, nodding softly and gesturing with his fingers for Izuku to come closer. He grabbed the bottle, unscrewing the cap.