Mao

Nanoka Kiba, a female high-school student, 8 years earlier was near death because of some supernatural circumstances. In the present, one day she find herself again in dangerous supernatural events, but this time she is saved by the mysterious Mao, a young man apparently from another dimension.

The story is set in a "land where two worlds intersect," and it centers on "a strange romance between a boy and girl who meet by fate."