 He tells Ichigo that he "is hers" and that he was "born to protect her".After his first appearance, the Blue Knight reappears whenever Ichigo is in danger to protect her, and disappears after the situation is resolved.As the series progresses, Ichigo attempts to learn his true identity and suspects both Ryô and Keiichirô, before learning near the end of the series that the Blue Knight is an alternate persona of her boyfriend, Masaya.