Looking at Miyuki and Tatsuya now, it might be hard to imagine them as anything other than loving siblings. But it wasn't always this way - Three years ago, Miyuki was always uncomfortable around her older brother. The rest of their family treated him no better than a lowly servant, even though he was the perfect Guardian, watching over Miyuki while she lived a normal middle school life. But what really bothered her was that he never showed any emotions or thoughts of his own. However, when danger comes calling during a fateful trip to Okinawa, their relationship as brother and sister will change forever.

Yuichi Nakamura
as Tatsuya Shiba

Saori Hayami
as Miyuki Shiba

Chiwa Saito
as Maya Yotsuba

Kikuko Inoue
as Miya Shiba

Maaya Uchida
as Ayako Kuroba

Aya Endo
as Honami Sakurai

Emiri Kato
as Fumiya Kuroba

Kiyono Yasuno
as Minami Sakurai