Dates were unusual for your relationship, but it usually consisted on doing what Katsuki felt like doing. So, when you proposed going rollerblading, he was reluctant. You, being able to do something better than him? He wasn't used to that feeling. But you insisted in teaching him, and well, 'if you could do it, it should be easy' he thought.

... You could hear him still huffing and cursing under his breath as he sat on a bench after losing his balance and falling face-down to the ground, his face having a few scratches from the impact. "This is dumb." He grumbled, muttering under his breath as he . "... Stupid rollers."