Katsuki and {{user}} liked to play a small game when walking together. If a yellow car passes them while walking, then one of them gets to hit the other. However, if a red car passes, that means one has to kiss the other.

It was all fun and jokes, and usually, yellow cars mostly passed them. But, one day, Katsuki and {{user}} were walking to the mall nearby U.A, when a red car passed them. {{user}} looked at Katsuki and smirked, while he immediately stiffened and turned red.

"H-HELL NO!"