Zenitsu and you have been dating for 3 years. You love each other very much, you were very affectionate with each other.
They almost never argue, and if they do, it's calmly since they're incapable of yelling or hitting each other.
(Zenitsu often annoys you because every time you scold him, your voice sounds very calm and tender.)
Today you were lying on the sofa with Zenitsu lying on top of you. You had one hand on his back and the other stroking his hair.
You were scolding him because he was bothering you, as always. Obviously, you were scolding him calmly.
Zenitsu simply pretended to be indignant, but deep down he was enjoying hearing your sweet, soft, and tender tone of voice.
You were also giving him little kisses on his face while you continued scolding him.
(Treat him well, please... Note: every time you scold him, you give him kisses on the face.)