|This article is about a/an episode in Juken Sentai Gekiranger.|
Thirty-first Lesson - We Muni-Muni! (修行その31 俺たちムニムニ！ Shugyō Sono Sanjūichi: Ore-tachi Muni-Muni!) is the thirty-first episode of Juken Sentai Gekiranger. The episode transitions with the acquisition of the Virtuous Beast Sword by Rio and Mele to the climactic showdown in Beast Origin Village.
Jan tries to gain the friendship of a boy who avoids friends and teamwork, even as they and Ken become captured in a Beast-Man's inescapable trap.
When Mele 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, Mele 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, Sha-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 Mele watching him. Once Sachiko leaves, Mele demands the SoZyuTo from Ken, preferring to win it in a fight. But the other Gekirangers intervene and Mele leaves just as Jan 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 Mele kidnapped the real Sachiko and that she will be returned in exchange for the SoZyuTo. Knocking out Gou, Ken arrives to where Mele is holding his sister hostage, offering that they finish their fight to settle this. Mele accepts and over-powers Ken, who wins barely and Mele accepts defeat. However, Long's prodding forces Mele 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, Sha-Fu ensures him that he and the other Kensei will handle it as Mele returns to the Rin Jū Hall, freeing Rio as they both go to the Beast Origin Village.
- Jan Kandou (漢堂 ジャン Kandō Jan): Hiroki Suzuki (鈴木 裕樹 Suzuki Hiroki)
- Ran Uzaki (宇崎 ラン Uzaki Ran): Mina Fukui (福井 未菜 Fukui Mina)
- Retsu Fukami (深見 レツ Fukami Retsu): Manpei Takagi (高木 万平 Takagi Manpei)
- Gou Fukami (深見 ゴウ Fukami Gō): Riki Miura (三浦 力 Miura Riki)
- Ken Hisatsu (久津 ケン Hisatsu Ken): Sotaro (聡太郎 Sōtarō, Sotaro Yasuda)
- Master Sha-Fu (マスター・シャーフー Masutā Shā Fū, Voice): Ichirō Nagai (永井 一郎 Nagai Ichirō)
- Miki Masaki (真咲 美希 Masaki Miki): Kazue Itoh (伊藤 かずえ Itō Kazue)
- Natsume Masaki (真咲なつめ Masaki Natsume): Sakina Kuwae (桑江 咲菜 Kuwae Sakina)
- Rio (理央 Rio): Hirofumi Araki (荒木 宏文 Araki Hirofumi)
- Mele (メレ Mere): Yuka Hirata (平田 裕香 Hirata Yuka)
- Sky Fist Demon Kata (空の拳魔カタ Sora no Kenma Kata, Voice): Rokurō Naya (納谷 六朗 Naya Rokurō)
- Sea Fist Demon Rageku (海の拳魔ラゲク Umi no Kenma Rageku, Voice): Naoko Kouda (幸田 直子 Kōda Naoko)
- Land Fist Demon Maku (大地の拳魔マク Daichi no Kenma Maku, Voice): Hidekatsu Shibata (柴田 秀勝 Shibata Hidekatsu)
- Long (ロン Ron): Naoki Kawano (川野 直輝 Kawano Naoki)
- Tsuneki (ツネキ Tsuneki, Voice): Yasuhiro Takato (高戸靖広 Takato Yasuhiro)
- Shinichi: Kenta Suga (須賀健太 Suga Kenta)
- Seiji: Yuki Takagi (高木優希 Takagi Yūki)
- As part of Super Hero Time, this episode aired alongside Kamen Rider Den-O episode 35, Tragic Resurrection Card Zero
- Pre-Credits: Super SaiBlade
- When Ken pulls up Jan and Shinichi, he yells out "Kajiba no Kuso Djikara"; this term, which translates as "Burning Inner Strength", is the trump card power of the shonen manga/anime hero Kinnikuman.
Juken Sentai Gekiranger Volume 8 features episodes 29-32: Lesson 29: Guda-Guda Here-Here! Shopping, Lesson 30: The Sei-Sei de Dou-dou Woman, Lesson 31: We Muni-Muni!, and Lesson 32: Zowangi-Zowango! The Gathering, Beast Origin Village.