Unable to find information on Rei, Kouga and Gonza speculate that he is from the western district. Kouga made arrangements for the Barankas fruit with Gonza and he heads out for his routine of sealing and entrances used by Horrors; finding that Rei has been doing his job. Kaoru gets a new job as a waitress and Rei stops where she is working for a table full of sweets. Soon after, Rei attempts to kill Kaoru in the back entrance, but Kouga appears to stop him. After having Kaoru be taken back to his manor, Kouga confronts Rei as the two fight their way through Shinjuku's Capital Building where they get a brief interference from a Horror before the two assume their Makai Knight forms. The two fight their way down the Capital Building before they run out of time with Garo the winner to ZERO's dismay.
涼邑零、またの名をゼロ。確かに彼は、そう名乗った。魔戒騎士であるとも…。仲間であるはずの零は、何故、鋼牙に破邪の剣を投げ付けたのか？ さらに、陰我の宿るオブジェを破壊して廻り、鋼牙を挑発する零。鋼牙は、零がカオルに接近した事を知り、彼のもとへと赴く。遂に、騎士対騎士の壮絶な戦いが始まった！
Gonza investiga a un caballero Makai del distrito oeste, pero no encuentra ningún registro de Rei en los libros de Makai. Mientras Kaoru desempeña su nuevo trabajo como camarera, Rei lucha contra Kouga. Son interrumpidos por un horror. Durante la batalla con él, Rei se transforma en colmillo de plata ZERO.
