HAYASE AMI is cosplaying as Minatsuki Takami from Deadman Wonderland. Deadman Wonderland is a manga serial written by Jinsei Kataoka and illustrated by Kazuma Kondou, who also wrote and illustrated the Eureka Seven manga, and published in Shōnen Ace since 2007. Tokyopop acquired the licensing rights to distribute the manga in English and has released the first volume on February 9, 2010. It has also been announced that an anime adaption to the series has been green-lit (it is planned for April 2011).
Minatsuki Takami aka Hummingbird
Voiced by: Iori Nomizu
Minatsuki is Yō Takami's younger sister, and a Deadman secluded in Level G. When Ganta encounters her for the first time, she appears as an extremely shy and gentle girl who stands at odds with the place she is held in. In truth, this reserved and quiet personality is just a ruse that she uses to make those around her feel secure and to mask her true nature, that of a sadistic psychopath so twisted that she becomes sexually aroused by witnessing others suffering. While an ordinary girl, she became warped (and likely gained her Branch of Sin powers) after her mother abandoned her during the Great Tokyo Earthquake. She lost more than once while fighting in the Carnival Corpse, and she lost again in her fight with Ganta, though by rigging the organ-choosing slot machine she only lost her hair. After these events she somehow reconciled with her brother Yō, though she still lashes out violently from time to time. Her power, Whip Wing, takes form of blood-made whips which extend from her hair and can deliver immensely quick blows or restrain her opponent.