Chapter Summaries

Moyu awakened the Six Eyes and a system while fighting a Demon, survived the encounter, and was found by Giyu Tomioka. He followed Giyu down the mountain as a new quest to obtain Water Breathing began.

• Moyu was cornered and gravely wounded by a Demon, then accepted the system’s gift of Satoru Gojo’s Six Eyes.
• Moyu used the Six Eyes to dodge the Demon’s attacks, strike its Death Point, and briefly stop its claw with Infinity before the Demon fled from the approaching dawn.
• Moyu completed the system’s survival quest, exchanged coins for a Hemostasis Technique and a recovery potion, and treated his wounds.
• Giyu Tomioka found Moyu, questioned him about the Demon and his unusual eyes, and offered to take him for treatment.
• Moyu followed Giyu down the mountain as the system triggered a side quest to obtain the Water Breathing inheritance.

After receiving treatment at a Wisteria Crest House, Moyu demonstrated unusually rapid healing and told Giyu about his ability to see energy. Giyu agreed to take him to meet his master, and the system set Moyu a three-month task to learn Water Breathing and pass Final Selection.

• Giyu brought the badly injured Moyu to a Wisteria Crest House, where Dr. Hirano treated his demon-claw wounds.
• Moyu's wounds healed unusually quickly, and he explained to Giyu that his awakened eyes let him see energy and other hidden details.
• Moyu told Giyu he wanted to kill demons, and Giyu promised to take him to meet his master once he had recovered.
• During two days of rest, Moyu studied the exchange shop and used the Six Eyes to control his energy, speed his healing, and analyze medicinal herbs.
• After the old doctor found Moyu's wounds already healing, Giyu took him toward his master's mountain home and warned him that Water Breathing was difficult.
• The system assigned Moyu a task to learn all ten forms of Water Breathing within three months and pass Final Selection, with gold coins and intermediate shop access as rewards.

Moyu began training under Sakonji Urokodaki on Mount Sagiri, learning to focus his Six Eyes through the rhythm of water and enduring his first day of brutal physical exercises. When Tanjiro arrived seeking help for Nezuko, Moyu vouched for her, and Urokodaki agreed to shelter her and train Tanjiro alongside him.

• Giyu brought Moyu to Mount Sagiri, where Sakonji Urokodaki examined him and agreed to teach him Water Breathing.
• Urokodaki had Moyu focus his Six Eyes on water until he could sense and synchronize with Urokodaki's breathing rhythm.
• Moyu endured mountain climbs, balance practice, firewood chopping, and repeated attempts to cut through a waterfall with a Wooden Sword.
• Moyu independently practiced his breathing rhythm, raising his Basic Breathing Style proficiency to 15% and earning 50 coins.
• Tanjiro arrived with Nezuko in a wooden box and pleaded for Urokodaki to save her; Moyu vouched for Nezuko's protective nature.
• Urokodaki allowed Tanjiro and Nezuko to stay, set Tanjiro and Moyu to train together, and triggered Moyu's mission to protect Nezuko from execution.

Moyu and Tanjiro began individualized training under Sakonji Urokodaki, learning to improve their abilities and making progress in Water Breathing. The day ended with Moyu resolving to change Tanjiro and Nezuko’s fate, while Urokodaki quietly wondered what the two boys might accomplish.

• Urokodaki tailored the boys’ training to Tanjiro’s keen sense of smell and Moyu’s ability to see more than his body could react to, then put them through demanding exercises.
• Tanjiro completed a blindfolded circuit over uneven posts, while Moyu improved his coordination and struck Urokodaki’s thrown stones.
• Moyu recognized the energy in Tanjiro’s movements as Hinokami Kagura, and Tanjiro explained that his family had passed the dance down for generations.
• Moyu split wood with perfect accuracy and learned to hold his wooden sword in the waterfall for three seconds by yielding to its flow.
• Urokodaki taught Tanjiro the First Form: Water Surface Slash, and Moyu initially mastered the form and earned 100 gold coins from the system.
• Moyu saved his coins rather than buying an upgrade, encouraged Tanjiro to believe Nezuko could become human again, and silently vowed to change their fate as Urokodaki watched the boys with hope.

Moyu fused Breathing Style energy with Cursed Energy, gaining a powerful but taxing new ability, while Urokodaki set him to train its control. After seeing Tanjiro’s Hinokami Kagura, Moyu recognized its connection to Sun Breathing and encouraged Tanjiro to pursue it; the system then tasked Moyu with creating his own Breathing Style before Final Selection.

• Moyu fused Breathing Style energy and Cursed Energy, unlocking Breathing Cursed Energy and the Path Creator achievement, but Urokodaki warned him to use the unstable power cautiously.
• Urokodaki tested Moyu’s new strength and assigned him afternoon training to master a no-splash sword strike, while Tanjiro practiced striking the waterfall.
• Moyu used the Six Eyes and Breathing Cursed Energy to cut the water without ripples, but the effort triggered a system warning about excessive mental strain.
• Moyu watched Tanjiro perform Hinokami Kagura and told him the dance held the beginnings of Sun Breathing, prompting Tanjiro to commit to developing it to protect Nezuko.
• Moyu exchanged system coins for Universal Breathing Style Enhancement and received a task to create a unique Breathing Style before Final Selection.

Moyu split two rocks by sensing their inner rhythms and developing a new technique, while helping Tanjiro make progress in his own training. He met Sabito and Makomo’s souls, learned that Final Selection had grown more dangerous, and left the mountain with his first original Breathing Style form recognized by Urokodaki.

• Urokodaki challenged Moyu to split the smallest rock through its hardest point, and Moyu eventually cut it open by following its inner structure rather than relying on brute force.
• Moyu showed Tanjiro how to sense the rock’s inner “breathing,” helping him make his first crack after half a month of practice.
• Moyu encountered Sabito and Makomo’s souls in the woods, and they advised him to trust bodily sensation as well as his eyes and warned him about dangerous Mutants at Mount Fujikasane.
• Moyu used a spiraling force to split the larger rock diagonally, and Urokodaki named the technique Water Breathing, Zero Form: Vortex Slash.
• Moyu received system rewards for improving his energy control and creating an original form, while Sabito and Makomo watched him and Tanjiro continue their training.

Moyu created Mirror-Surface Unbinding, a precise new Breathing Style form, while helping Tanjiro awaken the beginnings of Sun Breathing. As the Final Selection approached, Sabito and Makomo warned that Mount Fujikasane held several unusually powerful demons, and Moyu began planning a third form that could reduce the cost of his techniques.

• Moyu studied the system’s exchange previews and received a recommendation to prioritize Nen: Four Major Principles, but chose to focus on his unfinished Breathing Style task.
• With guidance from Makomo and Sabito, Moyu used the Six Eyes and breathing Cursed Energy to discover a natural dividing line in a boulder and created Zero Form, Second Form: Mirror-Surface Unbinding.
• Urokodaki praised Moyu’s precise technique and told him to complete a third form before the Final Selection; Tanjiro then resolved to create a form of his own.
• Moyu recognized the rhythm of Hinokami Kagura in Tanjiro’s breathing, and Tanjiro later ignited flames on his wooden sword as Urokodaki identified the beginnings of Sun Breathing.
• Sabito and Makomo warned Moyu that at least three powerful demons were hunting swordsmen on Mount Fujikasane, while Moyu began considering an evolving third form to lower his techniques’ cost.

Moyu’s Six Eyes evolved after he nearly lost control while awakening Limitless: Blue, and his companions helped bring him back. After recovering, he created the third technique of his Zero Form, completing Azure Flow Breathing, while Tanjiro achieved the nascent form of Sun Breathing.

• Moyu’s overloaded Six Eyes activated Limitless automatically, repelling Tanjiro and forming a growing spatial singularity as he discovered the principles of Blue.
• Makomo, Tanjiro, and Sabito reached Moyu and helped him regain control; his Six Eyes evolved to the growth stage, unlocking spatial structure perception and nascent Blue.
• Moyu rested and meditated for three days, adapting his breathing Cursed Energy into a networked system to support his new abilities.
• Tanjiro cut a rock with real flames using the nascent form of Sun Breathing, and Urokodaki confirmed his progress.
• Moyu used his evolved Six Eyes and networked energy to transform a fallen leaf into a paper butterfly, naming the technique Myriad Forms Mimicry.
• Urokodaki declared Moyu’s three techniques complete, and the system named his style Azure Flow Breathing and awarded him an Ability Fusion Ticket.

Moyu and Tanjiro received Nichirin Blades left by Urokodaki’s former disciples and spent their final week of training sparring before the Final Selection. After advancing Azure Flow Breathing through a fusion with Nen’s Four Major Principles, they prepared to leave for Mount Fujikasane together.

• Urokodaki gave Moyu and Tanjiro blue Nichirin Blades belonging to former disciples, and Moyu received a system quest to use his blade during the Final Selection.
• Urokodaki made the two spar against him without using their strongest abilities, exposing weaknesses in their combat experience and coordination.
• Moyu and Tanjiro practiced fighting as a team, with Tanjiro defending and Moyu supporting him with precise, unpredictable attacks.
• Moyu fused Nen’s Four Major Principles with Azure Flow Breathing, improving his energy control and adding new uses for its techniques.
• Urokodaki warned the boys that they must survive seven days on Mount Fujikasane, and they vowed to pass the trial together.
• Moyu tested his Nichirin Blade at a waterfall and raised its resonance to 15%, while Tanjiro voiced his worries about Nezuko and the trial.

Moyu and Tanjiro began the seven-day Final Selection on Mount Fujikasane, where Moyu hunted demons and rescued other candidates. He avenged Sabito, Makomo, and Urokodaki’s other fallen disciples by killing the Hand Demon, then continued into the forest with four days of the trial remaining.

• Moyu and Tanjiro arrived at Mount Fujikasane, met Murata, and entered the Final Selection after learning they had to survive for seven days.
• Moyu and Tanjiro split up, and Moyu killed a demon and directed a frightened candidate toward safer ground.
• Over the next three days, Moyu killed twenty-three ordinary demons and rescued seven participants.
• Moyu found the Hand Demon, which boasted about killing thirteen of Urokodaki’s fox-masked disciples, including Sabito and Makomo.
• Moyu destroyed the Hand Demon’s arms, tortured it, and killed it to avenge the fallen disciples, then gathered their masks and gained a stronger resonance with his Nichirin Blade.
• Moyu continued through the mountain with four days left in the trial, while Tanjiro separately defeated a demon using Hinokami Kagura: Dance.

Moyu rescued Tanjiro from the mutated Shadow-Stealing Demon and killed it, confirming that Mount Fujikasane held unusual threats beyond ordinary demons. After searching the mountain for further anomalies without finding a clear source, Moyu continued the Final Selection determined to strengthen himself and protect the other candidates.

• Moyu searched Mount Fujikasane for irregularities and sensed Tanjiro battling a concealed demon in a swamp.
• Moyu intervened to save Tanjiro, exposed the Shadow-Stealing Demon’s hiding ability, and helped Tanjiro create an opening.
• Moyu severed the demon’s arm and destroyed it with a powerful Azure Flow Breathing technique, earning quest rewards.
• Moyu and Tanjiro concluded the demon was unlike any kind Tanjiro had encountered, then split up so Moyu could investigate the mountain.
• Moyu spent two days killing ordinary demons and investigating strange energy readings but found no definite source of the mutations.
• Moyu decided to use the remaining three days to gain strength and protect Tanjiro and the other trial participants.

Moyu and Tanjiro passed Final Selection, returned to Mount Sagiri, and watched Nezuko awaken and grow close to Moyu. After training and completing early missions, they received their personal Nichirin Blades, and Moyu set out toward his new life in the Demon Slayer Corps.

• Moyu, Tanjiro, Zenitsu Agatsuma, Inosuke Hashibira, Kanao Tsuyuri, and Genya Shinazugawa survived Final Selection and chose tamahagane for their Nichirin Blades.
• Moyu and Tanjiro returned to Mount Sagiri, where Nezuko woke and reached eagerly for Moyu, appearing to feel safe around him.
• Moyu mastered Nen Ability: The Four Fundamental Principles and integrated it into Azure Flow Breathing Style while he and Tanjiro trained and completed nearby demon investigations.
• Fifteen days later, Moyu received Azure Star, a personal Nichirin Blade with perfect compatibility for his Breathing Style and Six Eyes, while Tanjiro received his black blade.
• Moyu and Tanjiro practiced with their new swords as Nezuko watched, and Moyu prepared to begin his life in the Demon Slayer Corps.

Moyu and Tanjiro investigated the disappearances in Wisteria Town and defeated two demons who had abducted young women. They rescued one survivor, discovered the other missing girls had likely been eaten, and set off to report to headquarters and take the survivor home.

• Moyu and Tanjiro followed demonic traces through Wisteria Town and found an underground passage in the alley where A Kiku had disappeared.
• Tanjiro spotted two demons carrying an unconscious girl toward a cave, and he and Moyu attacked them.
• Moyu severed the earth-controlling demon’s hands while Tanjiro defeated the hardened demon, and both demons panicked when Tanjiro asked about Muzan Kibutsuji.
• Moyu and Tanjiro killed the demons and found the abducted girl alive, but only the clothes of the other two missing girls remained in the cave.
• At dawn, Moyu and Tanjiro prepared to report to headquarters and take the rescued girl home.

Moyu trained to control the prototype of Blue while Tanjiro refined Water Breathing and combined it with Hinokami Kagura. After weeks of practice, they received a mission to investigate suspected demon attacks in Maple Leaf Town.

• Moyu redeemed the Mental Strength Meditation Method and used it to strengthen his mind and improve his control of Breathing Cursed Energy.
• Moyu created a tiny, unstable Blue and used it to crush a large boulder, earning a system reward for increasing his mastery.
• Tanjiro and Nezuko hurried to check on Moyu, and Nezuko gave him a berry to help him recover.
• Moyu and Tanjiro trained for about half a month as Moyu improved Blue's stability and Tanjiro strengthened his slashes with Hinokami Kagura's rhythm.
• A Kasugai Crow assigned Moyu and Tanjiro to investigate unusual attacks in Maple Leaf Town, and they set out with Nezuko.

Moyu and Tanjiro investigated the demon attacks in Maple Leaf Town and confronted three demons using the unnatural mist as cover. After Moyu killed two with Blue, Tanjiro helped him finish the last demon, leaving the town’s immediate threat ended and Moyu aware that sustaining Limitless drained him heavily.

• Tanjiro and Moyu learned from an old man that demons had been attacking Maple Leaf Town on foggy nights, leaving victims drained and covered in tiny cuts.
• Tanjiro and Moyu split up to investigate, and Moyu traced the mist’s energy to an abandoned dye works, where three Mist Demons ambushed him.
• Moyu used Limitless to withstand their attacks, then killed two Mist Demons with Blue while exploiting their movements.
• Moyu disrupted the last demon’s attempt to escape, and Tanjiro decapitated it with Hinokami Kagura: Dance as Nezuko helped clear the mist.
• Tanjiro and Moyu regrouped after the mist dispersed, and Moyu recognized that he needed to improve his endurance to sustain Limitless in prolonged battles.

Moyu traveled alone to Yukimi Village, killed the demon preying on its livestock, and used a newly acquired energy-control technique to improve his use of Limitless. He left the northern Wisteria House stronger and more efficient, then set out for home.

• Moyu left Tanjiro and Nezuko to train with Sakonji Urokodaki and traveled alone toward Yukimi Village while studying Limitless.
• Moyu exchanged 12,000 coins for advanced Energy Manipulation Mastery and absorbed its knowledge during the journey.
• Moyu found the weak Tongue Demon at a livestock shed and killed it with one sword strike before it could attack a sheep.
• Moyu stayed at a northern Wisteria House and practiced refining Inviolability and Blue, reducing their energy costs and improving their stability and control.
• Moyu reached 35% mastery of Inviolability and 15% mastery of Blue, then departed for home after several days of training.

Moyu tested his refined Cursed Energy control and new Azure Flow Breathing against demons on his return to Mount Sagiri. After learning Tanjiro and Nezuko had gone to Tokyo, he raced there, fearing they would encounter Muzan Kibutsuji, and began searching the city for demonic auras.

• Moyu used Inviolability and Azure Flow Breathing to defeat a Mud Swamp Demon and two Bamboo Joint Demons.
• Moyu returned to Mount Sagiri and learned from Sakonji Urokodaki that Tanjiro and Nezuko had left for a mission in Tokyo.
• Moyu recognized the danger of Tanjiro encountering Muzan Kibutsuji and immediately set out for Tokyo.
• Moyu traveled day and night while planning how to protect Tanjiro and Nezuko without fighting Muzan directly.
• Moyu reached Tokyo, disguised his Nichirin Blade, and used his Six Eyes to search the crowded city for demons.

Moyu found Tanjiro in Asakusa just as Tanjiro spotted Muzan Kibutsuji, and stopped him from attacking in a crowded street. Following a demonic presence hostile to Muzan, Moyu and Tanjiro reached Lady Tamayo’s hidden home, where she invited them inside to talk.

• Moyu found Tanjiro and Nezuko near Kaminarimon, where Tanjiro sensed Muzan Kibutsuji disguised as a gentleman carrying a little girl.
• Moyu stopped Tanjiro from drawing his Nichirin Blade and reminded him that Nezuko needed him, breaking through his rage and despair.
• Moyu noticed Muzan glance toward them before disappearing, then led Tanjiro away from the crowd because Muzan might have noticed them.
• Moyu traced a strange, medicinal demonic presence hostile to Muzan and told Tanjiro it might lead to a way to turn demons back into humans.
• Moyu and Tanjiro followed the presence to a hidden Western-style building, where Lady Tamayo welcomed them inside and noted that Moyu’s eyes interfered with Yushiro’s barrier.

Moyu and Tanjiro agreed to help Tamayo collect powerful Demons’ blood for her research into turning Demons back into humans. When the Temari Demon and Arrow Demon attacked, Moyu killed them both and brought Tamayo blood samples, leaving her hopeful that her research could advance.

• Tamayo explained that she needed blood from the Twelve Kizuki to advance her research, and Moyu and Tanjiro agreed to help collect it.
• The Temari Demon and Arrow Demon broke through Yushiro’s barrier and attacked the building, seeking Tanjiro and his Hanafuda Earrings.
• Moyu used Blue to redirect the Temari Demon’s ball, then killed her with Azure Star.
• Moyu blocked the Arrow Demon’s attacks with Mirror Realm and killed him, collecting blood in special test tubes.
• Moyu gave the blood samples to Tamayo, who thanked him and said they could help her research make a breakthrough.

Moyu and Tanjiro were diverted from their return to Mount Sagiri to investigate a demon in Kinutatsuki Town, where they met Zenitsu Agatsuma. Moyu defeated the demon and the three set out together for Mount Sagiri.

• Tamayo gave Moyu and Tanjiro crystal test tubes for blood samples before they left her residence.
• Moyu and Tanjiro received an urgent mission to investigate residents falling asleep and losing their vitality in Kinutatsuki Town.
• Moyu identified an abandoned shrine as the source of the town’s hypnotic aura, while Zenitsu Agatsuma told them he had heard a woman singing beneath it.
• Moyu entered the shrine’s cellar alone and killed the Lullaby Demon, ending its attack on the town.
• Tanjiro and Zenitsu met Moyu outside the shrine, and the three began the final stretch of their journey to Mount Sagiri together.