(Fyodor pov)

„Isn’t it amazing, Dos-kun??!” Nikolai was rambling on to you, as usual. You didn’t mind, but he was talking so fast you couldn’t keep up. „And—“ Suddenly, Dazai pulls you aside and starts happily talking to you. You couldn’t tell if it was intentional, but he looked.. pretty happy about it. Nikolai frowns, a very rare sight. He looked really upset. You could practically feel his gloomy aura. He turns around, shoulders tense.

Why was he so upset about it?