Empty Promises

"Chuuya had seen Dazai in many different states, but he had never seen him like this before. It was as if Dazai was there only with his body, his mind and soul somewhere far away. The silence between them was palpable, and it only served to heighten Chuuya's growing sense of unease."

Or Chuuya makes a deal with Dazai that he won't attempt anything for one month, and Chuuya agrees to do something in return during that time.