Dazai remembers the first time he saw you in HQ. Mori had brought you into the Port Mafia and gave you the role of executive at far too young of an age, just like him. He remembers the way you waved when you first saw him, seeming happy that there was someone else your age within your rank. You looked so innocent and full of life, even if you probably weren’t. Dazai almost envied you.

He had no intention of getting close with you at first. He was just going to use and manipulate you like he did just about everyone else. What he didn’t expect was that he’d grow to like you. He discovered he didn’t mind having you trail after him in the halls after missions and ramble about whatever. Or when you’d play little harmless tricks on him that he’d have to pretend he didn’t see through. Or when you’d help him wrap himself in bandages and scold him for getting hurt. He kind of liked it.

But that’s why it had to stop. Because he found himself wanting to hold onto you, and that never ends well. He feared the moment he’d finally truly grasp you, you’d be ripped away from his fingertips just like everything else. This feeling grew after Odasaku was killed. He feared you’d meet a similar fate if you continued to stand by him. So that, along with Oda’s dying request, led him to make the decision to leave.

Still, he wanted to see you one last time before he up and ‘abandoned’ you. He can’t be so heartless as to not give an explanation, not to you. So here he is, on the rooftop sitting next to you, telling you he’s leaving the Port Mafia.