Chapter Summaries

Lei Dou developed and trained Boil Release: Hot Breath Blade until it reached the threshold for fusion, then returned home after Naruto made progress on the Rasengan. Hinata visited to give him a protective charm before his mission to the Land of Waves, but Uncle Masano arrived just as she was preparing to leave.

• Lei Dou created Boil Release: Hot Breath Blade, tested its heat and corrosive power on a tree, and impressed Naruto.
• Lei Dou trained with the technique in a river until Great Sage confirmed his Boil Release strength had reached the fusion threshold; Zangetsu’s blade patterns turned dark red.
• Lei Dou returned to the training ground and found Naruto practicing the rubber-ball stage of the Rasengan.
• Lei Dou declined Naruto’s invitation to Ichiraku Ramen and went home, where Hinata arrived to give him an Omamori for his journey to the Land of Waves.
• As Lei Dou offered to walk Hinata home, Uncle Masano knocked at the door, leaving Hinata panicked about being discovered there.

Lei Dou hid Hinata from Uncle Masano, then she accidentally stayed overnight and left with him at dawn, prompting teasing misunderstandings. He later joined Kakashi, Sasuke, Naruto, and Tazuna for the Land of Waves mission, took charge of the team, and led them into the increasingly dense woods.

• Lei Dou hid Hinata under his covers while Uncle Masano visited, then found her asleep beside him the next morning and sent her home.
• Shimozuki Hayate saw Hinata leaving Lei Dou's house and assumed they were romantically involved, offering to help arrange their marriage.
• At the Hokage Building, Lei Dou rebuked Tazuna for criticizing the Genin assigned to escort him to the Land of Waves.
• Kakashi announced he would not intervene during the mission, and Lei Dou became team leader after Sasuke declined the role.
• Lei Dou assigned Sasuke to scout ahead, Naruto to protect Tazuna, and himself to guard the rear as the group set out.
• As the party traveled through the heat, Lei Dou adjusted his skill setup and the surrounding woods grew denser.

Lei Dou stopped two Kirigakure Chunin ambushing the team, and Sasuke killed the surviving attacker after Lei Dou forced him to make the choice. Near the Land of Waves, Zabuza Momochi attacked, but Lei Dou caught Kubikiribōchō with one hand and stunned him with a powerful counterthrow.

• Lei Dou killed one ambushing Chunin with a thrown kunai while Sasuke defeated the other, then Lei Dou told Sasuke to finish him.
• Naruto recovered from freezing in fear, and the team continued toward the Land of Waves while Naruto and Lei Dou trained during their nightly stops.
• Zabuza Momochi learned his subordinates had been killed and chose to attack the team himself because Sasuke's Uchiha bloodline could bring a high price.
• As Zabuza's spinning Kubikiribōchō swept toward them, Lei Dou caught it one-handed, leaving Kakashi, Naruto, and Sasuke dumbstruck.
• Zabuza confronted Lei Dou, who threw Kubikiribōchō hard enough to slice through a massive tree, then identified himself as Shimozuki Raito, a Genin of Konoha.

Lei Dou overpowered Zabuza Momochi in a sword fight, destroying the Kubikiribōchō and wounding him before Zabuza switched to ninjutsu. Zabuza trapped Lei Dou in a thick mist and began his Silent Killing Technique, while Lei Dou used Thought Acceleration to sharpen his senses.

• Kakashi identified Zabuza as a former Kirigakure ANBU and one of the Seven Ninja Swordsmen of the Mist, and kept Naruto and Sasuke back from the fight.
• Lei Dou drew Zangetsu and stopped Zabuza’s two-handed strike with one hand before overpowering him with sheer strength.
• Lei Dou shattered the Kubikiribōchō and wounded Zabuza after outmaneuvering his damaged defense.
• Zabuza offered Lei Dou a place among Kirigakure’s Seven Ninja Swordsmen, but Lei Dou rejected him with questions about social insurance and a housing fund.
• Kakashi warned that Zabuza would turn to ninjutsu, and Zabuza used the Hidden Mist Technique to conceal himself and threaten Lei Dou with Silent Killing.
• Lei Dou activated Thought Acceleration and sensed disturbances in the mist as Zabuza’s voice came from every direction.

Lei Dou used the Hidden Mist Technique and Silent Killing Technique he had acquired to turn Zabuza’s assassination tactics against him, disappearing with Transparent Release and badly wounding him. Zabuza countered with a Great Waterfall Technique and spread water across the ground to track Lei Dou’s footsteps, leaving Lei Dou’s next move unresolved.

• Zabuza attacked Lei Dou from the mist, but Lei Dou accurately blocked the Kubikiribōchō and then intercepted his repeated silent strikes.
• Lei Dou acquired the Hidden Mist Technique and Silent Killing Technique, then combined the latter with Transparent Release to vanish from Zabuza’s senses.
• Lei Dou wounded Zabuza repeatedly while remaining invisible, forcing him to drop his sword and retreat.
• Zabuza unleashed the Great Waterfall Technique to expose Lei Dou, but Lei Dou used Water Breathing’s Second Form: Water Wheel to split the torrent.
• Zabuza used the floodwater covering the ground to track Lei Dou’s footsteps, and Lei Dou realized how he was being located.

Lei Dou used Transparent Release and his swordsmanship to defeat Zabuza, then exposed Haku’s attempt to take Zabuza away. As Zabuza accepted death to protect Haku, Lei Dou began demonstrating his self-created Water Breathing style, leaving Haku mesmerized.

• Lei Dou revealed his Transparent Release, and Kakashi explained its rarity while Naruto and Sasuke watched.
• Lei Dou used Body Flicker and concealed sword strikes to wound Zabuza, who collapsed and lost the ability to fight.
• Haku appeared disguised as a Kirigakure Assassination Squad member, but Lei Dou exposed the ruse by threatening to kill Zabuza.
• Haku pleaded for Zabuza’s life, while Zabuza ordered him to flee and then asked Lei Dou to spare him.
• Lei Dou promised to let Haku live and began demonstrating Water Breathing as he prepared to kill Zabuza.

Lei Dou defeated Zabuza but spared him, prompting Zabuza to abandon his life as a ninja and leave with Haku. After reaching the Land of Waves, Lei Dou agreed to stay three days to help finish the bridge and began special training for Naruto and Sasuke.

• Lei Dou cut Zabuza's neck with Blessed Rain After the Drought, and Zabuza appeared to die peacefully as Haku carried him away.
• Zabuza revived after discovering Lei Dou had only wounded him, then chose to leave the Land of Waves and seek a quiet life with Haku.
• Lei Dou and his team reached Tazuna's village, where Lei Dou agreed to remain for three days until the bridge was finished.
• Lei Dou announced that he would train Naruto and Sasuke, and he called Kakashi out of hiding to help teach them.
• Lei Dou began the training by demonstrating Tree Climbing with chakra control, standing sideways on a tree trunk with his feet.

During Team 7’s training in the Land of Waves, Naruto mastered the Rasengan and Sasuke awakened his Sharingan after Lei Dou defeated and provoked him. After returning to Konoha, Lei Dou’s conditioning met the requirements for fusing Boil Release and Ice Release, and he prepared to begin the process.

• Lei Dou demonstrated tree climbing, then trained his body all day while Naruto and Sasuke mastered tree climbing and water walking.
• Naruto revealed that he had learned the Rasengan, and Lei Dou sparred with Naruto and Sasuke, easily defeating both and provoking Sasuke’s Sharingan awakening.
• A villager delivered Zabuza’s Kubikiribōchō to Lei Dou with Haku’s message that Zabuza thanked him and had done as Lei Dou wished.
• Over the next three days, Lei Dou’s physical conditioning improved until the Great Sage confirmed he met the requirements for fusion; the team returned to Konoha, where Hiruzen upgraded and encrypted their mission report.
• Lei Dou prepared to fuse his kekkei genkai, but the Great Sage recommended that he first master One Mind, Two Uses to improve the fusion’s success rate.

Lei Dou unlocked One Mind, Two Uses after four hours of focused fire and wind training, then tested it by casting ninjutsu and sword techniques simultaneously. He successfully combined Water Release with Water Breathing, but his attempt to maintain Boil Release and Ice Release together caused a dangerous backlash.

• Lei Dou trained fire and wind nature transformations, doubling their power before Great Sage completed its calculations and unlocked One Mind, Two Uses.
• Lei Dou tested the new skill by drawing different shapes with each hand, then casting Water Dragon Bullet and Beast Wave Palm at the same time.
• Lei Dou used the Great Waterfall Technique while wielding Zangetsu, destroying stone pillars with simultaneous ninjutsu and Water Breathing swordsmanship.
• Lei Dou combined Flowing Dance with Water Dragon Bullet to smash a boulder, naming the new attack Water Breathing: Third Form, Modified: Dragon Flowing Dance.
• Lei Dou activated Boil Release and Ice Release together, but their conflicting attributes caused a violent internal surge, forcing him to stop both techniques.
• Great Sage explained that the kekkei genkai interfered with each other, preventing Lei Dou from maintaining their fragile balance.