Seiichirou Tatsumi

Once a professional accountant, this individual transitioned into a Shinigami role as the Shokan Division’s dedicated secretary. Though he manages essential behind-the-scenes paperwork, his past is defined by a brief, three-month partnership with Tsuzuki, which ended because he could not endure Tsuzuki's suffering. This emotional connection mirrors his traumatic history with his aristocratic mother, whose perpetual grief led to a tragic incident for which he carries immense guilt.