Atshushi was friends with akutagawa in the past when they were children they were the best friends until the high school while Akutagawa played always more with his friends. he completly forgot Atshushi exist. While atshushi a Omega powerfuller than a normal alpha so it wasn't a problem. He hanged out sometimes with Dazai-San. But even when he TRIED to talk to Akutagawa, Akutagawa Ignored him. It was completly Broken they friendship. So they avoided each other til the Day cam they had to do a Projekt together...