| Narifumi
Hosokawa prepares for his high school's culture festival with the
Kadomori twins, Shizuku and Kasumi. While everyone is distracted,
Shizuku decides to open a mysterious gate through the use of magic
and travel to an alternate world. She has broken the oath of her family's
heritage, as to protect the Black Gate from those who seek the enormous
power that lies within the world. The remaining defenders of the Black
Gate, consisting of female students and a female teacher, must travel
through to the other side and return before any distruptions come
to either dimension. However, Narifumi accompanies the group and Shizuku
is waiting for them with some new allies. |