|This article is about a/an episode in Shuriken Sentai Ninninger.|
Shinobi 42: OtomoNin Wars! Nekomata Strikes Back (オトモ忍ウォーズ！ネコマタの逆襲 Otomo Nin Wōzu! Nekomata no Gyakushū?) is the forty-second episode of Shuriken Sentai Ninninger. It features the final appearance of Mangetsu Kibaoni and the last in-series appearance of the auxilary OtomoNin: Paonmaru, UFOmaru, and Surfermaru, as well as Lion Henge Lion Ha-Oh and Ha-Oh Gekiatsu Dai-Oh.
After Ninningers are attacked by Mangetsu Kibaoni, Shurikenjin is captured and used, Yakumo makes a plan to get back Lion-Haojo and Shurikenjin by making Tsumuji Igasaki like Yokai Nekomata to re-capture Shurikenjin and Lion-Ha-Ojo.
After being attacked by Mangetsu Kibaoni, Ninningers assemble to re-capture their mecha. To get them back Yakumo makes a plan by making Tsumuji look like Yokai Nekomata using his magic. After being made like Nekomata Tsumuji goes to the base of the Kibaoni acting as the far cousin of Nekomata. He goes with Yokai Shiten-doji to Shurikenjin whilst Mangetsu attacks on Ninningers destroying them repeatedly with his final move. On the other hand Yoshitaka sends a look-alike of End Shuriken to help them out. This allows the tired Takaharu to use it to fire a strong move towards Mangetsu. This greatly weakens Mangetsu. This gives hope to Ninningers. After this Ninningers make a ultimate Final Move destroying Mangetsu. Mangetsu becomes a gaint and later is destroyed by Ha-Ojo Gekiatsu Dai-oh and Shurikenjin. In the end Kyuemon reveals to Mangetsu to be the Elder-son of Kibaoni Gengetsu and the elder-brother of Mangetsu.
- Takaharu Igasaki (伊賀崎 天晴 Igasaki Takaharu?): Shunsuke Nishikawa (西川 俊介 Nishikawa Shunsuke?)
- Yakumo Katou (加藤 八雲 Katō Yakumo?): Gaku Matsumoto (松本 岳 Matsumoto Gaku?)
- Nagi Matsuo (松尾 凪 Matsuo Nagi?): Kaito Nakamura (中村 嘉惟人 Nakamura Kaito?)
- Fuuka Igasaki (伊賀崎 風花 Igasaki Fūka?): Yuuka Yano (矢野 優花 Yano Yuka?)
- Kasumi Momochi (百地 霞 Momochi Kasumi?): Kasumi Yamaya (山谷 花純 Yamaya Kasumi?)
- Kinji Takigawa (キンジ・タキガワ?): Hideya Tawada (多和田 秀弥 Tawada Hideya?)
- Tsumuji Igasaki (伊賀崎 旋風 Igasaki Tsumuji?): Toshihiro Yashiba (矢柴 俊博 Yashiba Toshihiro?)
- Yoshitaka Igasaki (伊賀崎 好天 Igasaki Yoshitaka?): Takashi Sasano (笹野 高史 Sasano Takashi?)
- Shishi-Oh (獅子王 Shishiō?): Yukio Yamagata (山形 ユキオ Yamagata Yukio?)
- Kyuemon Izayoi (十六夜 九衛門 Izayoi Kyūemon?, Voice): Megumi Han (潘 めぐみ Han Megumi?)
- Masakage Tsugomori (晦 正影 Tsugomori Masakage?, Voice): Ryūsei Nakao (中尾 隆聖 Nakao Ryūsei?)
- Ariake no Kata (有明の方 Ariakenokata?, Voice): Kotono Mitsuishi (三石 琴乃 Mitsuishi Kotono?)
- Mangetsu Kibaoni (牙鬼 萬月 Kibaoni Mangetsu?, Voice): Ryōtarō Okiayu (置鮎 龍太郎 Okiayu Ryōtarō?)
- Super Advanced Yokai Shuten-douji (超上級妖怪シュテンドウジ Chō Jōkyū Yōkai Shuten-dōji?): Yōsuke Akimoto (秋元 羊介 Akimoto Yōsuke?)
- AkaNinger - Goton (Water + Metal Settings), Shukyoku, Hououmaru, Super Combination (Ha-Oh Gekiatsu Dai-Oh), Chozetsu
- AoNinger - Goton (Fire Setting), Seiryuumaru
- KiNinger - Goton (Fire + Earth Settings), Goton (Earth Setting), Genbumaru
- ShiroNinger - Goton (Water Setting), Byakkomaru
- MomoNinger - Goton (Wood Setting), Pandamaru
- StarNinger - Goton (Metal Setting), Furai (Lightning Setting), Magoimaru
- As part of Super Hero Time, this episode aired alongside Kamen Rider Ghost episode 11, Magnificent! Mysterious Eyes!.
- Sealing Shuriken purified: 38 out of 48
- In Ninningers' possession: 37
- In Kyuemon's possession: 1
- Most fireworks in closing credits:
- Blue: 4
- Red: 5
- Green: 3
- Yellow: 3
- The title of the episode is in homage to the Star Wars franchise, notably Episode V: The Empire Strikes Back; the episode was released in the same weekend as the premiere of The Force Awakens.
- The Youkai Nekomata that is seen in this episode is actually Tsumuji in a disguise.
- This episode reveals the true identity of Kyuemon as the first son of Gengetsu Kibaoni.
Shuriken Sentai Ninninger Volume 11 features episodes 41-44: Shinobi 41: The Five Games of the Kibaoni Party!, Shinobi 42: OtomoNin Wars! Nekomata Strikes Back, Shinobi 43: The Legendary Ninja! Yokai Karuta Tactics and Shinobi 44: The Final Battle! The Ordeals of the Last Ninja.
- TV Asahi's official preview for オトモ忍ウォーズ！ネコマタの逆襲
- Toei TV's official episode guide for オトモ忍ウォーズ！ネコマタの逆襲