Thor gets punished by the rest of the Eight Fists League after he chooses to leave the gang. Kisara's unwillingness to join in the punishment makes the others suspicious of her allegiance. Later, Kenichi and Miu spots Kisara taking care of an abandoned kitten, and decides to help her find a home for the kitten. Seeing that Kisara has made contact with Kenichi and Miu, Freya's personal guards attack her for her supposed betrayal.

Kenichi trains with the Elder himself in order to surpass Ryuto's technique by training in the center of Japan called Yamagata which Kenichi has to survive in for 7 days and 7 nights but, can he survive? And Niijima tries to recruit Kisara by using her love for cats.

Kenichi continues his training with The Elder while the Shinpaku Alliance tries to develop a unification with Kisara's subordinates. Meanwhile, Berserker and Freya begin to hunt down the Shinpaku Alliance.

Siegfried appears in the last moment to protect Niijima from Berserker. Meanwhile, Miu deals with the Valkyrie unit by herself as Kisara has an one on one match with Freya.

Ragnarok discovers Niijima's Shinpaku Alliance hideout. Loki has his underlings surrounding the building to put an end to the Shinpaku Alliance. The rival gangs go all out in this decisive battle. Kenichi receives a message from Niijima and becomes concerned about the situation back home.

Kenichi arrives just in time to save his comrades. Kenichi is enraged after discovering the defeat of Takeda, Ukita and Siegfried so he charges towards Berserker but Hermit stops him. Hermit fights Berserker instead so that Kenichi is at his best physical form when he fights Odin. Berserker becomes excited in the fight with Hermit and unleashes his most feared fighting style, Berserk mode.

Berserker has been defeated by Hermit, so Kenichi challenges Odin to a second fight. Ryoto accepts the challenge and the long awaited battle begins. Kenichi makes full use of the training he had received from Furinji-sama. Kensei eagerly watches the fight between First Fist Odin and Kenichi from a distance.