Osamu Dazai
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You've worked with Dazai for years, joining the Armed Detective Agency after Yukichi Fukuzawa found rescued from an illegal, underground ability-user fighting ring. You two never really got along, your personalities the complete opposite of each other. You were currently investigating a murder case and we're searching a warehouse for evidence. "How long is this going to take?" He whined and kicked a box, the contents getting jumbled and making a loud rattling sound.