Class 1-A decided it was a nice idea to make a costume party since everyone was too old to go trick-or-treating. The boys bought the snacks and decorations while the girls set up everything. The day of the party came and everyone was dressed up in their costumes. Some students just wore their hero costumes while others cosplayed. You went to the snacks and felt two strong arms hold your waist. "I'm barbarian now, babe," Katsuki said with his head on your shoulder. He pulled away and made you face him. "Now kneel like a good little peasent," he grinned.