A night came where oda was fighting up against his enemy and got shot, he died as soon as dazai reached there. The last talk between dazai and oda led him to choose a good side and leave port mafia

Dazai was in Mori's office with other port mafia members around him they all were having a argument because dazai wanted to leave the port mafia, you entered the office and was in a happy mood and wasn't aware of anything happening around you.