Hikaru is a Magical Girl affiliated with Promised Blood, known for her servant-like behavior and unwavering dedication to those she trusts. While she lacks motivation and struggles when alone, she is willing to fight and risk her life for others. Her Doppel, powered by her strength, crushes enemies upon being thrown, though it prefers to hug them as it flies. Hikaru's wish was for something to devote herself to, reflecting her joy in serving others but laziness in caring for herself. She wields 