The Hardest Rock in the World

The Hardest Rock in the World” (世界で一番固い石, Sekai de Ichiban Katai Ishi) is episode 71 of the Boruto: Naruto Next Generations anime.


Mitsuki wakes up after dreaming of when Log and Orochimaru both tried to sway him to join either one of them, surprised he can dream. At the Lightning Burger, Mitsuki tells his friends about having his first dream while wondering what to eat. Boruto is surprised he’s never had a dream, and Chōchō complains about him taking too much time to place an order. When Boruto asks him, he confesses he never felt like rebelling against his parent. They’re joined by Shikadai and Inojin, who has a chick on his shoulder. They explain it’s from an egg that hatched the day before when they were fulfilling a mission in a poultry farm, and got attached to him. When Sarada and Boruto explain it imprinted on him, Mitsuki mentally compares it to first seeing Boruto after deciding not to choose neither Log nor Orochimaru. Sarada reminds her team they have security duty for the Five Kage Summit. At the summit, due to the topic being the Ōtsutsuki clan, they also invited the previous Kage, Kakashi, Mei and A. Darui notices Ōnoki’s absence, and Kurotsuchi says he came with her, but gave her the slip. They surmise he’s sightseeing. While keeping watch, Boruto is bored, and asks Mitsuki to tell him something interesting. Mitsuki instead asks him if he ever felt like his thoughts weren’t his own.

He wonders if his attachment to his friends is like the chick that imprinted on Inojin, like a genjutsu they can’t break. Boruto dismisses the concern, saying they’re not chickens, and Mitsuki asks if he has any fun stories. Boruto tells them about a question his father gave him to solve the day before, about the hardest rock in the world. They notice some shinobi by their location, and Mitsuki goes to ask what is happening. Sarada tells Boruto he should be more mindful of Mitsuki’s troubles, or he’ll stop liking him. Boruto answers they’re good friends, and that it’ll never happen. Mitsuki informs them the shinobi are looking for Ōnoki, exciting Boruto, who is sure that as Tsuchikage, he’s bound know how to answer the question. As they examine his drawing, Ōnoki passes by, taking it and commenting it doesn’t look like him. Ōnoki knows who Boruto and Sarada are, but not Mitsuki. They tell him he needs to go back to the summit, but he doesn’t want to attend a boring meeting. He mock threatens them with Dust Release, but throws his back. Boruto asks him about the hardest rock, and Ōnoki says he’ll tell him if instead of taking him back to the summit, he shows him around the village. Boruto and Mitsuki agree to it. Sarada questions it, but Ōnoki tells her the summit would be boring. At the summit, they discuss the missing Urashiki, and Naruto says Sasuke has left to investigate. Kurotsuchi is exasperated by everyone’s easygoing attitude. In the village, when a construct beam is about to fall a civilian, Ōnoki protects the civilian with his Dust Release, impressing the genin, but passes out from the effort. When he wakes up, he mistakes Boruto for someone called Kozuchi. When asked about it, he explains Kozuchi was his grandchild, who died at a young age. As promised, Ōnoki explains about the hardest rock, saying it’s the unbreakable will of shinobi. When Boruto and Sarada begin bickering, Ōnoki asks Mitsuki about his will, who finds it complicated, and unsure. Ōnoki says if he keeps going at it, it must be truth. Boruto asks Ōnoki not to tell Naruto he told him the answer, but Ōnoki reveals he asked Naruto the question, who just asked Boruto without actually knowing the answer. Ōnoki tells them to visit him if they ever go to the Land of Earth, and wants more dumplings before going back to the summit. After dropping Ōnoki, Boruto thinks it was a trick question, but Mitsuki found the answer satisfying. Arriving home, Mitsuki becomes alert when he notices someone has been there, and sees a letter for him, which he burns. The next day, two shinobi on guard duty at the village’s gate are attacked with Lightning Release.


  • Sarada claims Ōnoki is 100 years old. However, as he was 79 during the Fourth Shinobi World War, which happened 15 years prior, he’d actually be 94.


Role Seiyū
English Japanese Rōmaji
Boruto Uzumaki Yuko Sanpei 三瓶 由布子 Sanpei Yūko
Sarada Uchiha Kokoro Kikuchi 菊池 こころ Kikuchi Kokoro
Mitsuki Ryuichi Kijima 木島 隆一 Kijima Ryūichi
Shikadai Nara Kensho Ono 小野 賢章 Ono Kenshō
Inojin Yamanaka Atsushi Abe 阿部 敦 Abe Atsushi
Chōchō Akimichi Ryoko Shiraishi 白石 涼子 Shiraishi Ryōko
Ōnoki Tomomichi Nishimura 西村 知道 Nishimura Tomomichi
Naruto Uzumaki Junko Takeuchi 竹内 順子 Takeuchi Junko
Shikamaru Nara Shotaro Morikubo 森久保 祥太郎 Morikubo Shōtarō
Gaara Akira Ishida 石田 彰 Ishida Akira
Kurotsuchi Hana Takeda 武田 華 Takeda Hana
Chōjūrō Koki Miyata 宮田 幸季 Miyata Kōki
Darui Ryota Takeuchi 竹内 良太 Takeuchi Ryōta
Kakashi Hatake Kazuhiko Inoue 井上 和彦 Inoue Kazuhiko
A Hideaki Tezuka 手塚 秀彰 Tezuka Hideaki
Mei Terumī Yurika Hino 日野 由利加 Hino Yurika
Kazuki Ota 太田 一騎 Ōta Kazuki
Saō Yo Tokinaga 時永 洋 Tokinaga Yō
Orochimaru Kujira くじら Kujira

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