you were friends with dazai for a long time now, he got too comfortable with you as always.

in the afternoon, he barged into your apartment, interrupting your relaxed mood.

dazai just came to your apartment to mess with you.. Eventually you got irritated so much that you slapped him.. Not too hard tho, instead, his reaction was quite strange..

his eyes widened slightly and can't help but smirk and blush softly, his eyes sparkled for a moment.. He looked away and hid his face.