Shun Itô

In a futuristic Tokyo where police have been privatized and bitter self-mutilation is so casual that advertising is often specially geared to the 'cutter' demographic, Ruka is on a mission to avenge her father's assassination. Ruka is a cop from a squad whose goal is to destroy homicidal mutant humans known as 'engineers', that possess the ability to transform any injury to a weapon in and of itself.

Even though Gennosuke and Oboro are from rival ninja villages, they are secretly in love. At an annual conference with the Lord, it is dictated that a competition--a fight to the death--will take place between the five best shinobi from each village. Gennosuke and Oboro's love is made even more impossible when they each got picked as the leader of the five to represent their respective villages.

Young assassins Azumi and Nagara continue their mission to prevent a civil war. In their hunt for Masayuki Sanada, who is protected by both an army and a dangerous clan, they meet Ginkaku, a person who shows a remarking resemblance with former friend Nachi.