Hizuki is Sakataki's stepbrother, adopted by the Ryuuzoku (Dragon Clan) at a young age. He also serves as one of Kyoko's bodyguards. While Sakataki takes his duty to protect the Princess very seriously, Hizuki often appears to be fooling around. However, there is more to him than meets the eye.
Hizuki was responsible for the destruction of the Dragon Clan, yet he still managed to save Sakataki. Secretly, Hizuki harbors deep feelings for Kyoko and understands that she would do anything to save her friends. This led him to attempt to kiss Kyoko while she was asleep, an act that breaks the law. To save Hizuki from punishment, Kyoko declares that she will marry him, which was part of Hizuki's plan all along.
Sakataki tells Hizuki to let Kyoko go, and Hizuki hands over Li Knight, asking Sakataki to kill him. But Kyoko intervenes to stop them. It is then revealed that Hizuki is actually a stranger too, adding another layer of complexity to his character.
