|This article is about a/an episode in Kamen Rider Den-O.|
Memory Update (想い出アップデート Omoide Appudēto) is the forty-second episode of Kamen Rider Den-O.
Discovering that the female contract holder's wish was for Yuto himself, Deneb continues to try and make things memorable in hopes of helping his partner make true lasting memories.
The Oct Imagin's attack leaves Yuto unconscious and Shōko heartbroken about not meeting Yuto, who is wounded in the fight. Deneb reveals that he is the reason for the Oct Imagin attacking Yuto, who regains conscious and has to be restrained by the DenLiner gang to keep him from killing Deneb for risking innocents in spite of his intentions. Deneb takes Ryotaro to the park to find Shōko, though Deneb asks if Urataros can handle it as a favor. With that, U-Ryotaro resolves the matter, though she preferred to return the coat to Yuto personally. Meanwhile, Kai psychically tells the Oct Imagin to complete his contract first before killing Yuto. The next day, D-Yuto retrieves the coat, but soon spends time with Shōko at the city zoo with Ryotaro following them until the Oct Imagin resumes his attack. Den-O Rod Form attempts to take out the Imagin until a severed tentacle possesses a nearby truck and attempts to run him over. The Oct Imagin manages to make his way to Yuto and Shōko, forcing Yuto to assume Zeronos Zero Form to travel to November 15, 2006. Once there, Zero Form manages to keep the Imagin from killing Sakurai. Zeronos holds his own until a tentacle possesses the ZeroGasher and attacks him. The Imagin then attempts to choke out Zeronos until Den-O Liner Form arrives and the two combine their attacks to destroy the Oct Imagin. However, a piece of the Oct Imagin's tentacle enters AuraLiner, bringing it life as it enters the time-railway and becomes a hydra-like train track monster. Both the DenLiner and the ZeroLiner are overwhelmed by it until the KingLiner arrives and all the trains combine their firepower to destroy it. Though Shōko loses her memory of Yuto, Ryotaro assures him that Airi will remember him based on what Owner told him. By the time Ryotaro returns to the DenLiner, he meets the Station Master who gives him something very important to provide explanations behind the Junction Point.
- Den-O: Rod Form, Liner Form
- Zeronos: Zero Form
- Ryotaro Nogami (野上 良太郎 Nogami Ryōtarō): Takeru Satoh (佐藤 健 Satō Takeru)
- Kohana (コハナ Kohana): Tamaki Matsumoto (松元 環季 Matsumoto Tamaki)
- Yuto Sakurai (桜井 侑斗 Sakurai Yūto): Yuichi Nakamura (中村 優一 Nakamura Yūichi)
- Naomi (ナオミ Naomi): Rina Akiyama (秋山 莉奈 Akiyama Rina)
- Airi Nogami (野上 愛理 Nogami Airi): Wakana Matsumoto (松本 若菜 Matsumoto Wakana)
- Seigi Ozaki (尾崎 正義 Ozaki Seigi): Akira Nagata (永田 彬 Nagata Akira)
- Issē Miura (三浦 イッセー Miura Issē): Ryo Ueno (上野 亮 Ueno Ryō)
- Kai (カイ Kai): Hideo Ishiguro (石黒 英雄 Ishiguro Hideo)
- Momotaros (モモタロス Momotarosu, Voice): Toshihiko Seki (関 俊彦 Seki Toshihiko)
- Urataros (ウラタロス Uratarosu, Voice): Kōji Yusa (遊佐 浩二 Yusa Kōji)
- Kintaros (キンタロス Kintarosu, Voice): Masaki Terasoma (てらそま まさき Terasoma Masaki)
- Ryutaros (リュウタロス Ryūtarosu, Voice): Kenichi Suzumura (鈴村 健一 Suzumura Ken'ichi)
- Deneb (デネブ Denebu, Voice): Hōchū Ōtsuka (大塚 芳忠 Ōtsuka Hōchū)
- Owner/Opening Narration, Station Master (オーナー／オープニングナレーション、駅長 Ōnā/Ōpuningu Narēshon, Ekichō): Kenjirō Ishimaru (石丸 謙二郎 Ishimaru Kenjirō)
- Shōko Hazuki (葉月 翔子 Hazuki Shōko): Sora Matsumoto (松本 夏空 Matsumoto Sora)
- Oct Imagin (オクトイマジン Okuto Imajin, Voice): Kenjiro Tsuda (津田 健次郎 Tsuda Kenjirō)
- Kamen Rider Den-O/Momotaros: Seiji Takaiwa (高岩 成二 Takaiwa Seiji)
- Urataros: Eitoku (永徳 Eitoku)
- Kintaros: Jirō Okamoto (岡元 次郎 Okamoto Jirō)
- Ryutaros: Toshihiro Ogura (おぐら としひろ Ogura Toshihiro)
- Kamen Rider Zeronos: Makoto Ito (伊藤 慎 Itō Makoto)
- Deneb: Yoshifumi Oshikawa (押川 善文 Oshikawa Yoshifumi)
- Oct Imagin: Norihito Itō (伊藤 教人 Itō Norihito)
- As part of Super Hero Time, this episode aired alongside Juken Sentai Gekiranger episode 39, Lesson 39: Uro-Uro! The Children Don't Return.
- Viewership: 5.8%
Blu-ray Box 3 comes with 13 episodes.