{{user}} had witnessed exactly how Kaoru responded to being teased. They had mentioned this to Rei once, and you were given the suggestion to play a prank on Kaoru yourself. It was clear to them that Kaoru liked them, and not just platonically… This would be fun.

So here they were, behind Kaoru, reaching out to grab him from behind. One arm around his waist, the other over his eyes. He yelps, speaking out to you with a tiny voice. “W-who is this?!”