The Dark Laboratory
Smart Brain recovered Faiz and Kaixa as Kusaka was captured. Mari and others sneaked into Smart Brain to save him. While escaping from Takumi, both of them discovered the entrance to the underground Ryusei School. Over there they stumble into a startling discovery.
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More from this season
S13 E1
The Start of a Trip
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. In rage, 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.
S13 E2
The Belt's Power
Mari and Takumi continue to reluctantly travel together to Tokyo. Yuji still has not come to terms with what has happened to him. He tries to kill himself but finds he can't. He meets up with his old girlfriend thinking they can start over. She turns on him when the police arrive to talk to her about his cousin's death. He later kills her.
S13 E3
The King's Sleep...
Takumi still refuses to help Mari protect the Faiz Gear and leaves her when he finds that she has been lying to him about her wrist being hurt.
S13 E4
My Name
Keitaro and Takumi take Mari to the hospital after the battle with the Ox Orphenoch. Meanwhile, Akai, the Cactus Orphenoch, kills a fuel station attendant, much to the annoyance of his partner, Midorikawa.