Katori, a supporting character, possesses phoenix ancestry that directly informs his supernatural traits. He shares a longstanding close friendship with Himuro, dating back to their childhood. His appearance features short, wavy red hair, transitioning from darker roots to vibrant ends. He has red eyes with stark white pupils. Typically seen in professional business attire within office environments, he frequently wears a smiling expression. Energetic and excitable by nature, intense positive emotions like happiness or enthusiasm trigger visible supernatural reactions: spontaneous fireworks materialize around him, and he sometimes sprouts phoenix wings. He harbors persistent romantic feelings for his coworker Otonashi, actively pursuing her attention. However, his approach proves overly intense and unsubtle, resulting in misunderstandings that lead Otonashi to misinterpret his intentions. His name, meaning "Firebird," overtly reflects his phoenix lineage.