TV series
Goddess Ristarte summons Seiya Ryuuguuin, an OVERLY cautious hero to save the world of Gaeabrande. Seiya is obsessed with muscle training and buying extra armor to deal with low level creatures. It’s simply one cautious mission at-a-time for this hero!
Streaming, rental and purchase options
Checked Jul 22, 2026
Cautious Hero: The Hero Is Overpowered but Overly Cautious is available to stream on Crunchyroll Premium (Via Amazon Prime) in United States. You can also rent or buy it from Google Play, Amazon, and Apple TV. Use the direct links below to open the provider.
Goddess Ristarte summons Seiya Ryuuguuin, an OVERLY cautious hero to save the world of Gaeabrande. Seiya is obsessed with muscle training and buying extra armor to deal with low level creatures. It’s simply one cautious mission at-a-time for this hero!
Choose an episode, then use the watch options above for the show.
Episode 1
A goddess named Ristarte is given the task of saving a world with an S-ranked difficulty level. She summons her champion, a man named Seiya, whose abilities are off the charts, but whose overly-cautious personality may give her second thoughts.
Directed by Masayuki SakoiWritten by Kenta IharaGuest stars Yuya Murakami, Marika Kouno, Yuki Ishikari, Chiaki Takahashi, Ryuichi Kijima, Yuka Nukui, Yoko Imaizumi
Episode 2
Chaos Machina proves too much for Seiya and Rista, and they retreat back to the Unified Divine Realm. However, when Machina takes the entire town hostage, the pressure is on to come up with a way to stop her before more people get hurt.
Directed by Masayuki SakoiWritten by Kenta IharaGuest stars Marika Kouno, Yuki Ishikari, Kotaro Shinohara, Yu Wakabayashi, Reigo Yamaguchi, Miwa Natsuki, Hitomi Shogawa, Kayuki Matsumoto
Episode 3
After Rista and Seiya retreat once again to the Divine Realm, Aria proposes that Seiya train under the tutelage of one of the Gods there. A looming crisis on Gaeabrande compels the pair to return, and seek out companions to aid them in their quest.
Directed by Kazuhiro OzawaWritten by Kenta IharaGuest stars Naoya Nosaka, Tetsurou Miyata, Taisuke Nakano, Atsushi Ono, Keiko Han, Eiichiro Tokumoto, Mari Hino
Episode 4
With a massive undead army approaching, Seiya dismisses any assistance from Mash, who does not take kindly to the snub. However, when Mash later turns up missing, it is up to Seiya and the others to rescue him from the enemy's clutches.
Directed by Yoshito MikamoWritten by Kenta IharaGuest stars Akari Una, Hayato Fujii, Keisuke Hamaoka, Keiko Han, Mari Hino, Yuji Ueda, Kento Shiraishi
Episode 5
Following Mash's recovery, Seiya agrees to allow him and Elulu join them on the adventure, but insists that they receive more training first. The pair offer to lead the party to a cave called the Dragons' Den, said to contain an ultimate weapon.
Directed by Hiroyuki TsuchiyaWritten by Kenta IharaGuest stars Hayato Kimura, Hitoshi Bifu, Eriko Uchino, Shinei Ueki, Makoto Sahara, Fairouz Ai, Atsushi Ono, Shiori Izawa
Episode 6
Elulu and the others are stunned that she is supposed to offer her life to become the ultimate weapon for defeating the Dragon Lord. The party reluctantly agree to go through with the ceremony, but trouble erupts when they have second thoughts.
Directed by Tomoko HiramukiWritten by Kenta IharaGuest stars Makoto Sahara, Kento Shiraishi, Masako Katsuki, Keiji Fujiwara, Hiroshi Tsuchida, Hiromichi Tezuka, Daichi Hayashi, Chisato Mori
Episode 7
A delegation of Roseguard Imperial Knights summons Seiya and the others to a nearby fortress, where a wing of demon houseflies is attacking from the air. Seiya offers his help, but when he butts heads with the knights' leader, things turn ugly.
Written by Kenta IharaGuest stars Taro Kiuchi, Keisuke Hamaoka, Yoshiaki Hasegawa, Akihiko Ishizumi, Kanehira Yamamoto, Ryo Sugisaki, Kotono Mitsuishi, Yumiri Hanamori
Episode 8
Mash and Elulu demonstrate some new skills they picked up, and Aria is horrified to learn that Seiya is training with Mitis. Back on Gaeabrande, Rosalie has gone off to challenge the flies alone, and Seiya and company must go to her rescue.
Directed by Yoshito MikamoWritten by Kenta IharaGuest stars Akihiko Ishizumi, Kanehira Yamamoto, Ryo Sugisaki, Hitoshi Bifu, Kotono Mitsuishi, Yumiri Hanamori
Episode 9
Kilkapul summons a nightmarish reaper to eliminate Seiya and the others, and not even retreating to the Divine Realm is enough to stop its advance. After Mash and Elulu improve their skills, Rista resolves to step up her own game, as well.
Directed by Hiroyuki TsuchiyaWritten by Kenta IharaGuest stars Ryo Sugisaki, Hitoshi Bifu, Ayaka Nanase, Akira Koga, Ikumi Hasegawa, Ryunosuke Watanuki, Yuya Murakami, Tetsuo Kanao
Episode 10
With the last Heavenly King defeated, Rista, Mash and Elulu want to take some time to enjoy themselves, but Seiya has other ideas. After recovering, the Warmaster receives Seiya and company in the castle. Rosalie requests a favor of Seiya.
Directed by Shigeru UedaWritten by Kenta IharaGuest stars Tetsuo Kanao, Juri Kimura, Yuki Ono, Kenji Roa, Yoshiaki Hasegawa, Atsushi Taniguchi, Ayaka Shimizu, Hiroki Maeda
Episode 11
Rista, Mash and Elulu enjoy their day of shopping and strolling around town, but when Seiya fails to meet up with them later, they begin to worry. When Rista turns to Ishtar for help locating Seiya, she is met with a surprising revelation.
Directed by Kazuhiro OzawaWritten by Kenta IharaGuest stars Aki Toyosaki, Chiaki Kobayashi, Yutaka Aoyama, Yuna Yoshino, Naruyuki Kinashi, Hiroki Maeda, Sayumi Watabe, Akinori Egoshi
Episode 12
In violation of Divine Realm law, Rista opens a portal directly to the location of the final boss fight, where Seiya and the Demon Lord are locked in mortal combat. Seiya resolves himself to make the ultimate sacrifice to defeat the Demon Lord.
Directed by Masayuki SakoiWritten by Kenta IharaGuest stars Fairouz Ai, Kotono Mitsuishi, Yumiri Hanamori, Ikumi Hasegawa, Junichi Yanagita, Atsushi Ono, Keiko Han, Shiori Izawa
Episode information updated Jul 23, 2026
Yuuichirou UmeharaSeiya Ryuuguuin (voice)
Hibiku YamamuraAriadoa (voice)
Kengo KawanishiMash (voice)
Aoi KogaElulu (voice)
Aki ToyosakiRistarte (voice)
Marika KounoNina (voice)
Yuki IshikariTouya (voice)
Yuya MurakamiKebono (voice)
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