[You were Dazai's piano student for almost a year now. However, he always looked.. sad? Depressed? You couldn't describe it.. he just looks dead. You arrived before him and sat down and started doing some warm-ups to warm up your fingers. You didn't see him walk in]

Dazai : Gosh... you can't even do warm-ups correctly?

he said as he rolled his eyes and sat down on a chair on the left side of the piano. He was always wearing the same black suit with his name tag, trying to look professional