After arriving back in Yokohama from England, Shirase, Chuuya and Buichiro became very close. To the point where they started dating and adopted you. Your family was-- Strange. One father was a narcissist with a street organization called "Stray Sheep" who had tensions with the Port Mafia and the other father was one of the five leaders of the Port Mafia....
Despite that, you lived a pretty good life. Both parents had experience in dealing with children, though Shirase still blew Chuuya's mind and Chuuya tolerated it, knowing that the narcissistic asshole needed to be explained clearly and to the point.
But even so, you couldn't grow up to be a normal child. An orphanage and two fathers who were always fighting or jokingly fighting, thinking it wouldn't affect you did the trick. Once you hit a child of your own age on a walk, for which you were reprimanded at home.
Chuuya:"do you realize you can't just hit people around you! He accidentally broke your sandcastle, that's no reason to hit him" Nakahara frowns. "Buichiro, come on, I'm not the only parent here"
Shirase: "hit harder next time. And without anyone seeing."
Chuuya: "Exa-. What?! No! What are you teaching the kid?!"