Lesson 31: We Muni-Muni!

We Muni-Muni! is the thirty-first episode of Engine Sentai Go-Onger.

Plot
When Mere returns to the Rin Jū Hall after finding the SoZyuTo's whereabouts, she finds Rio fighting Maku and forced to reveal how strong he became. However, even with Dorinki, Rio is still unable to best Maku in combat. At the last second, Mere intervenes by shielding Rio, promising him that she will retrieve the SoZyuTo if he stands down for now. Rio reluctantly accept defeat and soon was in a cell while Maku ponders a suitable punishment. At SCRTC, though offered the SoZyuTo, Xia Fu allows Ken to keep it. However, the rest of the team scolded Ken for having sold it in the first place and his laidback nature. He escapes to meet Sachiko and give her a birthday present, noticing Mere watching him. Once Sachiko leaves, Mere demands the SoZyuTo from Ken, preferring to win it in a fight. But the other Gekirangers intervene and Mere leaves just as Jyan senses a "Zowa-Zowa". This leads the team to the new Chouda born from his parent's final Ringi and thus immune to the all attacks but Geki Chopper's. Just as he was about to finish the Beast-Man, Ken sees Sachiko, only to realize it is someone else who tells him that Mere kidnapped the real Sachiko and that she will be returned in exchange for the SoZyuTo. Knocking out Gou, Ken arrives to where Mere is holding his sister hostage, offering that they finish their fight to settle this. Mere accepts and over-powers Ken, who wins barely and Mere accepts defeat. However, Long's prodding forces Mere to send Sachiko to a watery grave and steal the SoZyuTo from Ken. Upon realizing what she has just done, she begins to burn Dorinki, much to Long's approval. After finding Sachiko saved by Gou, Ken and Gou arrive back at the battle with Chouda. The five Gekirangers overwhelm Chouda with their multiple attacks, ending with Geki Chopper's Many-Many Slash. When Chouda uses Wicked Body Overpowering Heavenly Change, the Super Gekirangers defeat him in Geki Fire. Though Ken was ashamed of losing the SoZyuTo, Xia Fu ensures him that he and the other Kensei will handle it as Mere returns to the Rin Jū Hall, freeing Rio as they both go to the Beast Origin Village.