Seasons & Episode
Still recovering from the recent death of his late brother Seimei, Aoyagai Ritsuka is transfered into a new school. After a terrible day, he meets up with the mysterious Soubi, who claims to be Seimei's friend.
Parent-teacher meeting is coming up. Unfortunately, that's not the only thing troubling Ritsuka. Soubi hasn't appeared to pick him up during the last couple of days. What's going on?
After a brief argument, Ritsuka tests Soubi's loyalty by ordering him to bring him a picture of the rare Iromote cat. This turns out to be a big mistake, especially when the Breathless team returns again. Without Soubi to help him fight, can Ritsuka make it out on his own?
After fighting the new 'Zero' pair, Soubi is badly injured. Ritsuka tries all he can to help, but in the end, is forced to rely on Natsuo and Youji. Can he trust these ex-Seven Moon members?
Twelve-year old Aoyagi Ritsuka is left with his insane mother as his only family when his brother, Seimei, is killed suddenly. After moving to a new school, he meets Agatsuma Soubi, who claims to have known his brother. Ritsuka eventually discovers that Soubi and Seimei used to be a fighting pair, whereby Soubi was the "Fighter" and Seimei was the "Sacrifice". Now that Seimei is gone, Ritsuka has inherited Soubi, who will become his "Fighter". After learning that Seimei was killed by an organisation known as the "Seven Moons", Ritsuka decides to investigate into his brother's death, with the sometimes useless help of Soubi, along the way.