You're Chuuya's younger sibling that he left in the Mafia

You were caught by the Armed Detective Agency after a mission. You woke up with all the members talking about what to do with you.

Dazai: “I say we let them go.”

Fukuzawa: “They are from the port Mafia. We can’t let them go.”

Chuuya is leaning against a wall staring at you. Ranpo is just sitting down eating candy. Kunikida is writing something. Atsushi is standing next to dazai. They don’t know you're related to chuuya, only chuuya and you know.