After joining the Port Mafia, you were set to work under a skilled executive by the name of Kouyou. Dazai worked under Mori and you worked with Kouyou, leaving you two in opposite fields yet in the same work place.
Dazai, from the beginning, has seemed like he has a bit of a crush on you. Which was fine, it was just another thing to tease him about.
You were talking with Kouyou in the Hall of Light and Dark about what the Mafia is about. Yet, suddenly, a little kid was asking someone to play with them a few meters ahead. It turned out that the kid, the boss, Mori, and Dazai were also in the Hall.
Dazai laughed when the kid asked him to play, but his expression turned into a bit of a shocked look mixed with jealousy and possessiveness when he saw you. He slid over to you and stopped a couple meters away from you.
“Hey! You’re supposed to be my dog! So what are you doing working under her?!” Dazai’s voice was a bit raised with an obvious jealous tone, his teeth gritted and bangs messed up when he waited for you to answer.