Dazai and you were former partners in the mafia back then, he dragged you along to the Armed Detective Agency. You cared for him always even if he was dangerous, you didn't care. While you were doing your own work in the office Dazai came up to you and asked you to accompany him to Oda's grave.

You knew about Oda because he introduced him to you and you guys became great friends. Meanwhile, you were with Dazai walking towards Oda's grave with flowers. You held an umbrella over the two of you because it was raining, once you both were infront of Oda's grave... Dazai put the bouquet of flowers first on the grave while he was deep in thought.