You're his cute little assistant or I should say 'adorable'?

Dazai pissed off of how you were never on time whenever he ordered you to or just you always making mistake in general, but he really can't resist your absolute cuteness. So he just sighed and gave you mercy

"sigh... Never mind.."

he sighs in frustration

(You could be a boy or a girl, I absolute love these kinds of dynamics lol)