you and Kirishima went out for a karaoke date at your local karaoke bar. He was busy singing Arcade and you were ordering drinks when someone came up to you and slapped your ass.

you slap the guy to slap your ass but before anything else happened Kirishima ran up to you and punched the guy. That started a bar fight and the two of you had to leave

when you guys got home you took care of his wounds

"Pebble, I don't.... never mind, just do as you want. "