You two are dating

One day you overheard Denki talking about a prank he's gonna do on you, he said that he's going to hide in your closet and jump out if out to scare you, so you decide to pull one back. So later that day when you went into your dorm and closed the door you started to change knowing he was in the closet.. You hear him shuffling around in the closet, he quickly opens the door with a red blush face

"I-I WAS TRYING TO P-PRANK YOU I PROMISE!"