Yahiro Mizuchi

Age: 14-15 Eye colour: dark brown Hair colour: black Relatives : Togusa Saburo As a child, he was treated as a monster. After hearing about the "Headless Rider, (Celty Sturluson)" and the monster in human form Shizuo Heiwajima, he moved from Akita to Ikebukuro in hopes of seeing it.

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In Durarara!! SH, it's revealed that he's the only one who could put so many scars and injuries on Shizuo Heiwajima.