Chapter Summaries

Mirai went to Mount Myoboku with Jiraiya to begin learning senjutsu under Fukasaku. Fukasaku confirmed Mirai had enough chakra to train and prepared to let him experience natural energy.

• Jiraiya told Mirai that he had arranged for him to train at Mount Myoboku, and they planned to return to the village each night using Flying Thunder God.
• Mirai informed Kushina Uzumaki of his plans, and she warned him and Jiraiya before they departed.
• Jiraiya summoned himself and Mirai to Mount Myoboku, where Fukasaku greeted them and praised Mirai's wartime deeds.
• Fukasaku said Mirai had enough chakra to practice senjutsu and might be the Child of Prophecy.
• Fukasaku invited Mirai to sit down and prepared to let him feel natural energy entering his body.

Mirai began training to absorb natural energy at Mount Myoboku, but toad oil triggered an unusually rapid influx that transformed his body. After Fukasaku stopped the surge, Mirai suspected the Nine-Tails' chakra was responsible and chose to continue under Fukasaku and Jiraiya's supervision.

• Fukasaku explained how Mount Myoboku's toad oil helped people absorb natural energy, and Mirai prepared to try it.
• Fukasaku applied toad oil to Mirai's arm, causing natural energy to flood into his body and make him swell into a frog-like form.
• Fukasaku struck Mirai with his staff to disperse the excess natural energy.
• Fukasaku and Jiraiya reacted with surprise when they realized they could not explain Mirai's unusually rapid absorption.
• Mirai suspected the Nine-Tails' chakra caused the effect and asked to continue training despite Fukasaku's warning about the risks.

Mirai struggled through senjutsu training but managed to turn a small amount of natural energy into sage chakra. He discovered that training also drew out the Nine-Tails’ chakra and greatly accelerated his chakra growth, then Shima arrived to invite them to lunch.

• Mirai repeatedly failed to control the violent natural energy, but eventually balanced it with his spiritual and physical energy and formed a little sage chakra.
• Fukasaku and Jiraiya were surprised by how quickly Mirai grasped the balance, though his body soon lost it as natural energy flooded in.
• Mirai realized that absorbing natural energy also drew out the Nine-Tails’ chakra and made his own chakra grow dozens of times faster.
• Shima called Mirai and Jiraiya to lunch, and Mirai politely declined on their behalf after Fukasaku teased Jiraiya about avoiding Shima’s cooking.

Mirai balanced natural energy for the first time beneath Mount Myoboku’s waterfall and discovered that his unusual pull on it gave him enhanced strength and sensitivity. Jiraiya then said they should head back, surprising Sage Fukasaku, who thought Mirai would stay to continue his senjutsu training.

• Sage Shima reassured Jiraiya and Mirai, then urged them to eat before the food got cold.
• Mirai absorbed natural energy beneath the waterfall while Jiraiya worried and Sage Fukasaku watched without intervening.
• Fukasaku recognized that Mirai was controlling the turbulent natural energy at a stable level and admired his talent.
• Mirai stopped absorbing energy, saw that his eyes and body had changed, and said he had finally managed it.
• Mirai tested his increased strength and noticed he could affect the natural energy around him.
• Jiraiya told Mirai they should head back, and Fukasaku asked why they were not staying on Mount Myoboku overnight.

Mirai and Jiraiya left Mount Myoboku and returned home to Kushina, then Mirai continued his senjutsu training with Fukasaku. After only three days, he had initially mastered senjutsu and was ready to train without frog oil.

• Mirai said goodbye to Fukasaku, placed a specially made kunai by the pool, and used the Flying Thunder God Technique to take Jiraiya home.
• Mirai and Jiraiya smelled Kushina's cooking and rushed inside, where they tearfully thanked her and embraced her.
• Two days later, Mirai meditated beside the waterfall pool and saw a faint shadow at the corners of his eyes.
• Fukasaku praised Mirai for initially mastering senjutsu in three days and said he could begin training without frog oil the next day.

Mirai and Jiraiya began the second stage of spiritual training on Mount Myoboku, where they had to sense nature by abandoning their thoughts and blending into their surroundings. Mirai immediately grasped the core of the exercise, surprising Fukasaku.

• Mirai sensed something and quickly carried Jiraiya away from the waterfall before a fairy appeared with a bamboo basket.
• The next morning, Fukasaku began the second stage of training with Mirai and Jiraiya, noting that Mirai had caught up with their progress in only three days.
• Fukasaku led the two to a stone forest and explained that they had to remain still, sense nature, and use its power.
• Mirai entered a trance and let go of his awareness of the stone slab beneath him instead of deliberately maintaining his balance.
• Fukasaku watched Mirai grasp the key to the training on his first attempt and felt astonished.

Mirai successfully began absorbing natural energy without toad oil, and used the Flying Thunder God technique to recover from a fall during his training. Jiraiya continued his own attempt to merge with nature, but his body began changing and he fell as well.

• After about ten minutes, natural energy began entering Mirai’s body as Jiraiya watched.
• Two hours later, Mirai’s balance broke and he fell with the stone slab, but he marked it with the Flying Thunder God technique and caught it after teleporting.
• Fukasaku recognized Mirai’s quick actions and judged him stronger than Jiraiya and nearly everyone in Konoha.
• Mirai resumed training after balancing the three types of energy, while Jiraiya stayed calm and tried to absorb natural energy himself.
• Jiraiya’s body began changing, his balance broke, and he fell.

Mirai and Jiraiya continued the difficult balance training for Sage Mode on Mount Myoboku, with Mirai’s rapid progress making Jiraiya’s practice harder. Mirai ultimately achieved Sage Mode, leaving Jiraiya amazed by how quickly he had surpassed him.

• Mirai and Jiraiya practiced balancing on stone slabs while Fukasaku observed their training.
• After half a month, Mirai’s absorption of natural energy forced Jiraiya to draw it from farther away, and Jiraiya repeatedly lost his balance.
• Jiraiya noticed invisible streams of natural energy flowing into Mirai as eyeshadow formed around Mirai’s eyes.
• Fukasaku recognized that Mirai had entered Sage Mode when Mirai opened his brown eyes with vertical pupils.
• Mirai proudly announced his success, and Jiraiya praised his talent while admitting he understood why Tsunade and Sakumo had called him a monster.

Mirai mastered Sage Mode at Mount Myoboku after only half a month, astonishing Fukasaku and Jiraiya. He then began testing his Sage Mode ninjutsu, ending with a gigantic Rasengan blasted into the sky.

• Fukasaku and Jiraiya marveled that Mirai had mastered Sage Mode far faster than anyone before him.
• Jiraiya wondered whether Mirai or Nagato was the Child of Prophecy and privately struggled with being surpassed by his disciples.
• Fukasaku congratulated Mirai, and Mirai thanked him for his guidance.
• Fukasaku explained that Mirai's senjutsu training still included learning Frog Kata and suggested he practice Sage Mode ninjutsu.
• Mirai appeared beneath the waterfall, formed a Rasengan over three meters wide, and blasted it into the sky.

Mirai tested his Sage Mode ninjutsu on Mount Myoboku, then used a derivative of the Flying Thunder God Technique to redirect his Rasenshuriken before it could cause damage there. The attack exploded in a distant forest, leaving Mirai to reflect on the successful experiment.

• Mirai tested a Sage Mode Super Big Ball Rasengan, whose power and speed impressed Jiraiya and another observer.
• Mirai successfully formed a Sage Art: Wind Style: Rasenshuriken with one hand while in Sage Mode.
• Mirai threw the Rasenshuriken, then used a Space-Time Barrier to absorb and redirect it.
• The Rasenshuriken exploded in a distant forest, uprooting and crushing trees within ten meters.
• Mirai explained that he had transferred the attack away to avoid damaging Mount Myoboku.

Mirai ended his morning Sage Mode practice and began learning Frog Kata from Fukasaku. After improving how quickly he entered Sage Mode, Mirai prepared to test the new techniques by punching Fukasaku.

• Mirai discovered that the Spiral Pill Shuriken's wind blades damaged his meridians, and he considered throwing the technique in Sage Mode to avoid the injury.
• Fukasaku ended Mirai's morning practice and told him to leave while Jiraiya stayed behind for more training; Mirai hurried away after Shima offered insect dishes.
• That afternoon, Mirai entered Sage Mode in less than a minute, faster than before.
• Fukasaku asked Mirai to remember his Frog Kata instructions and give him a punch, and Mirai agreed after realizing his concerns were unnecessary.

Mirai trained in Frog Kata with Fukasaku and quickly gained enough skill to overpower the sage in their sparring. After twenty days, Mirai had mastered perfect Sage Mode and completed his senjutsu training, leaving further progress to his own efforts.

• Mirai used natural energy to perform Frog Kata, demonstrating how quickly he could condense and direct it.
• Fukasaku sparred with Mirai, but Mirai’s speed and strength let him suppress the sage after only a few exchanges.
• After five days of Frog Kata training, Mirai forced Fukasaku back during their fight beneath the oil waterfall.
• Mirai ended the spar and thanked Fukasaku for teaching him to coordinate his hands.
• Fukasaku told Mirai that his senjutsu training was complete and that future improvement depended on him.

Mirai completed his sage arts training at Mount Myoboku and returned to Konoha with Kushina to take a mission. The Third Hokage told him that Tsunade was looking for him about her research to improve the ninja medical system.

• Mirai said farewell to Fukasaku and Shima after completing his sage arts training, while Jiraiya remained behind to continue practicing.
• Mirai and Kushina visited the Hokage Office to request a mission.
• The Third Hokage was surprised that Mirai had completed his training but accepted that he was ready for missions.
• The Third Hokage told Mirai that Tsunade wanted to see him about her research on improving Konoha's ninja medical system.

After completing a mission with Kushina, Mirai returned to Konoha and went to meet Tsunade, who wanted to discuss her Medical Ninjutsu research. He arrived at her hospital research room, where Sakumo was also present, while Tsunade remained absorbed in a scroll.

• The Third Hokage told Mirai that Tsunade wanted to consult him about his precise chakra control and asked him to help after his mission.
• Mirai accepted a C-rank mission and left with Kushina.
• Mirai and Kushina returned to Konoha after sightseeing, and Mirai delivered their belongings to Kushina’s home.
• Mirai went to the Hokage Building to report the mission and then headed to Tsunade’s research room at Konoha Hospital.
• Mirai greeted Sakumo, who explained that Tsunade had invited him, while Tsunade continued studying a scroll.

Mirai joined Dan Katō and Konoha doctors working to establish a medical shinobi system, and reviewed their progress. He learned that the system was taking shape but still faced unresolved technical issues involving medical ninjutsu and chakra control.

• Mirai met Dan Katō, who had survived the war and was helping develop Konoha's medical shinobi system.
• Dan Katō gave Mirai a booklet outlining the system's selection and training methods.
• Mirai reviewed the research and found that most of the system was progressing smoothly, though some medical ninjutsu details remained unresolved.
• Mirai noted that medical shinobi required extensive study and exceptionally refined chakra control.

Mirai helped Tsunade establish a system for training medical ninja, and she reported the completed research to the Third Hokage. The chapter left Mirai reunited with Jiraiya, who had finished training but still could not enter Sage Mode.

• Tsunade thanked Mirai for helping her plan a system for training medical ninja.
• Two months later, Tsunade told the Third Hokage that most of the research was complete and credited Mirai with resolving the main problem.
• Tsunade said she planned to train a group of medical ninja and select suitable candidates from the Academy graduates.
• Mirai found Jiraiya resting beneath the eaves, where Jiraiya said his training had ended for now but he had failed to enter Sage Mode.
• Mirai told Jiraiya that his guidance had shaped him and called him the finest ninja.

Jiraiya told Mirai and Kushina that he was leaving Konoha to search for an answer about whether people could trust one another. At dinner, he revealed the first pages of his novel, The Tale of the Gutsy Ninja, which he planned to finish on his travels.

• Jiraiya told Mirai he could leave the village now that Mirai was strong enough to protect his family, and said he would seek his answer through travel.
• Jiraiya, Mirai, and Kushina shared dinner at their familiar barbecue restaurant and reminisced about the past.
• Kushina asked where Jiraiya planned to travel, and he said he would start with the Land of Hot Water.
• Kushina suspected Jiraiya had ulterior motives, so he showed them his first novel, The Tale of the Gutsy Ninja, and said he would finish it on his journey.
• Mirai began to speak to Jiraiya.

Jiraiya left Konoha to travel after Mirai and Kushina saw him off, while Tsunade quietly wished him well. Later, Mirai spotted the supposedly dead Uchiha Obito alive as a young boy and watched him hurry away after choking on candy.

• Mirai asked Jiraiya whether he would say goodbye to Tsunade, but Jiraiya said she had her own things to do.
• Tsunade declined to see Jiraiya before he left and later wished him well under the moonlight.
• Mirai and Kushina saw Jiraiya off at Konoha's gate the next morning.
• Mirai spotted a young Uchiha Obito helping an old woman cross the street.
• Obito accepted candy from the old woman, choked on it, then hurried away because he was late.

Mirai and Kushina encountered Obito and Kakashi while walking through the village. Kakashi explained that he trained with weights to become a ninja like his father and Mirai.

• Kushina and Mirai set off together as Obito ran into Kushina, apologized, and hurried away.
• Obito collided with Kakashi at an intersection and fell, then angrily shouted after him before remembering his errand and running off.
• Kushina stopped Kakashi, and he greeted her and Mirai.
• Mirai noticed the weights on Kakashi's legs, and Kakashi said he trained hard to become a ninja like his father and Mirai.

Kakashi left Kushina and Mirai and started at the Ninja Academy, where he met Might Guy and joined a second-year class. Obito recognized Kakashi as the new student.

• Kakashi politely left Kushina and Mirai to continue his mental training.
• Six months later, Kakashi met Might Guy and their fathers at the Ninja Academy's opening day.
• Might Guy asked Kakashi to become his rival, and Kakashi agreed to improve together.
• Kakashi entered a second-year classroom as a new student, and Obito recognized him.