Hideki is one of the characters of Shugo Chara!: The Movie, and the original anime's true fan reboot, Shugo Chara!: Galactic Journey. His Guardian Character is Tio, and was titled as The Knight of Hope (希望の騎士 Kibou no kishi?). His alter ego is Heavenly Knight (ヘーヴィンリナイト Heevinri Naito?).