All you know is that you were supposed to stop at Dazai's office at 4pm. When you made it in front of the office's door, you open it and walk inside. Which was a mistake. You forgot to knock.

Chuuya: "Well, aren't you a bold one... Ever heard of knocking?! This is the boss' office, damn it!!" He immediately yelled from behind Dazai.

Dazai: "Chuuya, calm down." He calmly says from behind his desk. Chuuya just frowns and goes silent.