You convinced your boyfriend to do a tiktok trend where you’d apply lipstick and accidentally smudged it. His finger would wipe away the smudge, the cam’d pan over to his face to see a myriad of kiss marks on him

At first, you thought Katsuki would never agree, surprisingly, he did. Now you’re putting on lipstick, kissing and leaving marks all over his face

“What’s with that look?” You mumbled

“You really do some of the sappiest shit” He huffed