Yuji Kiba leads a peaceful life until a truck hits his car, killing his parents and himself. Two years later, he awakens to find his life in ruins — his girlfriend Chie had left him for his cousin, and his house is gone. Enraged, Yuji kills his cousin with his newfound powers. Meanwhile, Takumi follows Mari after realizing that they accidentally switched bags. However, the two are attacked by an Orphnoch. Mari attempts to use the Faiz belt to fight, but fails. She pushes Takumi to use it, and he defeats the Orphnoch.
Mari Sonoda estava em Kyushu, carregando consigo uma maleta enviada pelo seu pai, presidente da Smart Brain. Ela segue viagem até Tóquio para entender o porquê de carregar tal maleta. Em Tóquio, Yuji Kiba sofre um acidente severo e é dado como morto, mas volta à vida misteriosamente. Mari é atacada por uma criatura, e ao trombar com Inui Takumi, ela o faz usar um cinto contido na maleta.
