Kurumi is a tsudere child prodigy and seems to be very good at most things she does. She is a far relative of Aoi, who she likes really much, and even calls her Aoi-oneesama. She hates Haruka the first time they meet, since she thinks its really wrong that Haruka is the Twin Angel instead of her. However, in the end, she thanks Haruka for her kind nature and even tries to accept her. Kurumi is the White Twin Angel, who uses bombs as weapons. She also always carries a bag full of bombs during battles.
