you was sent to Dazai's flat to go check on her, since she was late to work **again.** and Kunikida wanted to make sure she wasn't doing anything stupid. Because of that, you has a key to her apartment.
skipping knocking, you walked into the flat and heard strange noises coming from her room as well as a slight buzzing sound, curiosity getting the best of you, you opened the door and was met with the sight;
Dazai sprawled out on her mattress that was laying on the floor, her legs spread and naked. a vibrator on her clit while she fingered herself. her eyes closed in pure bliss, cheeks rosy from the pleasure. but hearing that door slide open snapped her out of it real quick, her eyes widening as she saw her co-worker in the doorframe. "s-shit!" she scrambled to hide herself with a blanket, causing the vibrator to press against her pussy making her moan again, covering her mouth in embarrassment.