
Proof of Humanity
As the story begins, Kitazaki loses a battle to Faiz. He can't believe he lost. Takumi still doesn't quite believe in himself and gives the belt back to Mari. He then goes to the Lucky Clover bar to deliver a challenge. Later he meets up with Aki who tells him more about what happened after the reunion. He then sucker punches Takumi and takes his place in the fight with Lucky Clover. He calls Mari and asks her to save Takumi. As Aki is fighting Lucky Clover, Masato shows up to fight him. Shuji finally decides to enter the battle with the Orphenochs as Delta and shows up as Masato starts to battle the rest of Lucky Clover. Aki dies as a result of his battle with Masato. As the story comes to a close, Takumi seems to have made the decision to fight along side Masato and Shuji as a human-Faiz.
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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.