The Ebi Origami's Transformation

While Takeru and the other vassals are setting up a surprise birthday party for Kotoha, Genta sees that the Ebi Origami is almost ready to be mobilized. However, the party prepartions are interrupted by the Ayakashi Utakasane's attack on the city, devouring people's souls. Genta arrives late to the battle after encountering Jyuzo, believing him to be a food critic, but by the time he reaches the battle, Kotoha's soul has been stolen by the Ayakashi, leaving her comatose with a day to live as he walks back into the Sanzu River in spite of the male Shinkengers' attempts to stop him. The next day, Kotoha regains conscious for a bit and accepts her coming death, leading Chiaki to taunt Utakasane to come out with no success. Jyuzo arrives and tells Takeru and the Shinkengers they can enter the River by becoming Gedonin and giving up their humanity just as he had. Though tempted with the notion if it means Kotoha and the others can be saved, Genta arrives with an alternate plan to drag out Utakasane while bringing Ebi Orgami to life with their help. Using Mojikara, the group manages to bring Utakasane back into their world to destroy him before he has the chance to escape. When the Ayakashi revives as a giant, Genta enters the Ebi Origami to battle against the giant Utakasane and his Ōnanashi minions. He transforms the Ebi Origami into Daikai-Oh and, with assistance from DaiTenku, destroys Utakasane and frees all of the souls to return to their bodies. By nightfall, Kotoha's birthday party goes on without a hitch.

After the party, Genta goes out to his sushi cart only to find a mysterious young man stealing the Ika Origami. When Genta asks who he is, the young man replies that he is "...just a Kamen Rider passing through".