Orphaned four years ago by an accident that took her parents and her memory, 16 year-old Momoka Futami travels to Mitsurugi City upon receiving an invitation from the Mitsurugi House, her father's very powerful relatives who offer to take her in. What awaits her far exceeds her fears and expectations - a spiritual sword, Suzukaze, and a tumultuous battle.
Still unable to draw her spiritual sword, Suzukaze, for reasons unknown, Momoka Futami desperately searches for clues to her past. Struggling with her feelings of helplessness, Momoka finds unexpected support from two fellow spiritual sword wielders who vow to help her untangle the truth from the web of lies spun by the Mitsurugis. The truth about the incident that destroyed the Futami family four years ago is finally revealed!
A well-planned infiltration of the Mitsurugi house by the Shichijou Group leaves the Tonomori and Himekari unable to use, much less locate, their spiritual swords. They then look to Momoka and the dark secret surrounding her past to help them regain their power. Overwhelmed by the burden of their sudden revelations and expectations, Momoka withdraws into herself. Is this the end of the line for the Eight Masters?