Chapter Summaries

After dying from a stabbing, Mu Yu awoke in a new body and learned that a Goddess had used a World Tree Seed to bring him back. The chapter left him marveling at his youthful, exceptionally handsome appearance.

• Mu Yu recalled his grandfather’s teachings and the unlikely demolitions that made him wealthy before criminals stabbed him during a robbery.
• As he lay dying, Mu Yu recorded his wish to donate his organs, and his consciousness later followed a light out of the darkness.
• A beautiful woman comforted Mu Yu, then revealed she was a Goddess who had revived him with a World Tree Seed in gratitude for his donated heart.
• The Goddess explained that Mu Yu’s donated heart now beat in her chest and that her divine power had been sealed after a grave mistake.
• The Goddess showed Mu Yu his reflection, and he realized he had been reborn as a much younger, strikingly handsome boy.

Mu Yu learned that his new life as Goddess Sister’s unofficial temporary worker required him to plant trees in a vast desert. After discovering the Courtyard he had been given and hearing that even its cheapest tree cost ten million energy points, he faced the prospect of hard work and lost his hopes of a leisurely life.

• Goddess Sister explained that reviving Mu Yu through tree planting had made him an unofficial temporary worker in the Singer God Clan.
• Mu Yu reassured Goddess Sister that he was content with the lowly job, and she asked him to focus and close his eyes.
• Mu Yu arrived in a barren desert and found a small cabin that opened into a spacious Courtyard with a workshop and an electronic assistant.
• The assistant explained that Mu Yu had to collect energy, buy seeds through the Trading System, and water them to grow trees and gain improvements.
• Mu Yu learned that the cheapest tree required ten million energy points and that the Courtyard system would decide when he qualified to extract energy.

Mu Yu received a Supreme World Tree Seed and a Star Chart from Qing Yao before they parted, and he learned that his grandfather had lived peacefully after she erased his memories of Mu Yu's misfortune. The Tree Planting System began searching for a world, while a cleaner in a parallel universe used a Two-Dimensional Foil to flatten an entire world.

• Qing Yao gave Mu Yu a Supreme World Tree Seed necklace and explained that Tree Planters gathered energy across different domains.
• Mu Yu promised to make the seed sprout, and he and Qing Yao made a pinky swear that he would return and help her obtain a better Divine Position.
• Mu Yu named the Goddess Qing Yao, and she told him she had erased his grandfather's memories of his misfortune so he could live peacefully.
• Qing Yao warned Mu Yu that his body, grown from a World Tree seed, might have unusual weaknesses or advantages before he was pulled back into the Courtyard.
• The Tree Planting System began searching for a world, while a cleaner in a parallel universe used a Two-Dimensional Foil to flatten everything around it, including the sun.

Mu Yu received his temp-worker benefits, chose Language, Physique, and Swordsmanship Trees, and was assigned to Shimotsuki Village in the One Piece world. He raised his Japanese skill to Proficient and began improving his frail physique, preparing to enter the mission world.

• Mu Yu learned that his newbie package included three blank Minor Skill Tree seeds and one hundred thousand energy, then chose Language, Physique, and Swordsmanship Trees.
• The system detected One Piece and sent Mu Yu to Shimotsuki Village in the East Blue after he wished to receive Koshiro’s guidance.
• Mu Yu planted the three seeds and used energy to grow the Language Tree, raising his Japanese to Proficient.
• The system rewarded Mu Yu with ten thousand energy after detecting his enthusiasm for work.
• Mu Yu redirected energy to the Physique Tree, which sprouted after receiving fifty thousand energy, while his physique remained at LV1 and Frail tier.

Mu Yu entered the One Piece World determined to grow stronger, but his first moments there brought him a startling flood of energy and a Poverty Alleviation Office subsidy. He accepted the package of skills and items, leaving him unexpectedly wealthy and better equipped for the dangers ahead.

• Mu Yu resolved to work hard in the One Piece World and stay wary of its powerful inhabitants.
• Mu Yu descended onto a beach and received energy for breathing the air, feeling the breeze, basking in the sun, watching the waves, and hearing seagulls.
• Mu Yu questioned the system’s energy rewards and insisted it report the apparent error to customer service.
• Customer service approved Mu Yu’s energy accumulation and classified him as eligible for the Poverty Alleviation Office’s New Dream Plan.
• Mu Yu accepted the subsidy, gaining Complete Concentration, the Write defensive technique, a Hidden World tree seed and its required energy, and energy to transform a sword into an Okatana.

Mu Yu planted the Divine Tree Hidden World, then went to Isshin Dojo and joined as a student. Koshiro let him stay at the dojo and assigned Kuina to teach him, while Mu Yu earned energy rewards for his progress and politeness.

• Mu Yu used the system to plant the Divine Tree Hidden World, which grew over a hundred meters tall and began enriching the surrounding soil and spreading Hidden World energy.
• Mu Yu decided to study at Isshin Dojo and earned energy rewards as he walked there, then asked the system to stop reporting rewards below 10,000 points.
• Kuina opened the dojo gate and led Mu Yu to meet Koshiro after he said he wanted to learn swordsmanship.
• Mu Yu asked Koshiro to accept him as a disciple and provide food and lodging, and Koshiro agreed to let him study and stay at the dojo.
• Koshiro assigned Kuina to teach Mu Yu the basics, and Mu Yu's respectful bow earned the favor of Kuina and the dojo Instructors.

Mu Yu began sword training under Kuina, mastered the basics of holding a Bamboo Sword, and completed five hundred Suburi swings with unusual focus. Kuina was astonished by his endurance and followed him toward the kitchen after learning he planned to help prepare dinner.

• Kuina taught Mu Yu the proper way to hold a Bamboo Sword and explained the principles behind Suburi practice.
• Mu Yu practiced Suburi with complete concentration and earned Energy Points from his system as he swung.
• Kuina ended the session after Mu Yu completed five hundred swings without complaining about fatigue.
• Mu Yu thanked Kuina and said he planned to help prepare dinner, as he had agreed with Master.
• Kuina questioned whether a boy should help in the kitchen, then went there while privately feeling unsettled.

Mu Yu used his Energy Droplets to strengthen his physique while keeping his swordsmanship progress modest, then impressed Kuina with his stamina and disciplined Suburi practice. Kuina began teaching him Isshin-ryu guards, earning him another system reward.

• Mu Yu decided not to water the Swordsmanship Seed and poured all his Energy Droplets into the Physique Tree, raising his physique to LV2 while it remained rated Frail.
• Mu Yu fell asleep with Complete Concentration, and his Tree Planting System repeatedly rewarded him with Energy for entering sleep mode on time.
• The next morning, Mu Yu struggled to keep pace with the dojo disciples on their run, though his performance also surprised them.
• Kuina watched Mu Yu complete five hundred Suburi and praised his form, then told him to do one thousand repetitions the next day.
• Kuina began teaching Mu Yu the basic guards of Isshin-ryu, and the system rewarded him with 20,000 Energy for gaining her approval.

At Isshin Dojo, Kuina taught Mu Yu tree slashing, and his extraordinary concentration shocked her and drew Koshiro’s and Instructor Sosuke’s approval. Kuina resolved to train harder, while Koshiro considered taking Mu Yu as a disciple but decided to let Kuina teach him for now.

• Mu Yu correctly explained that placing a Bamboo Sword on the right signified goodwill, and Kuina changed the lesson she had prepared for him.
• Kuina had Mu Yu practice striking a rope loop on a tree ten thousand times to build strength, precision, and control.
• Mu Yu quickly entered Complete Concentration and landed his strikes precisely on the rope, leaving Kuina shocked and worried about being surpassed.
• Kuina went to the back mountain and trained Suburi harder, resolving to prove that girls could do anything boys could do.
• Instructor Sosuke praised Mu Yu’s talent, and Koshiro said he would let Kuina teach Mu Yu for now because his temperament still needed polishing after what happened with Terukawa.
• Mu Yu’s Energy Points surged as he practiced, though he did not know that Koshiro and Instructor Sosuke had recognized his potential.

Mu Yu completed ten thousand chopping swings and recovered before sharing a playful meal with Kuina. Kuina then taught him Isshin-ryu’s One-Sword Style, and Mu Yu grew fired up by its principle of cutting down an enemy without hesitation.

• Mu Yu finished ten thousand chopping swings, collapsed from exhaustion, and was urged by Kuina to stand and recover.
• Kuina brought Mu Yu a meal, and Mu Yu teased her about the salty miso soup before running off with the food.
• Kuina explained that Isshin-ryu taught both One-Sword Style and Two-Sword Style, and described One-Sword Style’s focus on defeating an enemy with one stroke.
• Mu Yu connected Isshin-ryu’s principles to Zoro’s resolve in battle, and Kuina smiled as she saw his enthusiasm.

Kuina taught Mu Yu the basic kendo stances and One-Sword Style’s Cutting Down technique, then Mu Yu used his accumulated energy to raise his swordsmanship and physique. He ended the day eager to train but chose to sleep and build his strength steadily.

• Kuina explained and demonstrated the five kendo stances and One-Sword Style’s Cutting Down technique to Mu Yu until nightfall.
• Mu Yu checked his System and discovered he had accumulated 747,200 Energy Droplets, much of it from chopping a tree ten thousand times.
• Mu Yu spent 100,000 energy watering the Swordsmanship Seed, which grew into a sapling and reached Swordsmanship LV1.
• Mu Yu directed the System to raise his swordsmanship to LV3 and put the remaining energy into his physique, which also reached LV3.
• Mu Yu resisted the urge to skip sleep and went to bed, deciding that growing stronger required steady effort.

After Mu Yu impressed Koshiro with his swordsmanship, Zoro arrived to challenge Isshin Dojo, and Koshiro selected Mu Yu to face him. Mu Yu worried that Kuina would die if the story unfolded as he remembered it, but he was left to confront Zoro instead.

• Koshiro stopped the Suburi practice and called Mu Yu to be the first sparring partner, while Kuina wondered why her father had chosen the dojo’s newest student.
• Zoro arrived and challenged Isshin Dojo, promising to join if he lost and take the dojo signboard if he won.
• Mu Yu recalled Kuina’s future death and considered whether he could change it by taking her place against Zoro.
• Koshiro called Mu Yu to fight Zoro and praised him as a strong genius, leaving Kuina feeling unwilling and Zoro eyeing Mu Yu suspiciously.

Mu Yu defeated Zoro in a dojo match, but the system revealed that he had replaced Kuina as Zoro’s most important rival and taken on the danger tied to her role. The main storyline began with Mu Yu tasked with strengthening Zoro’s resolve to become the World’s Greatest Swordsman within a year.

• Zoro challenged the dojo, grabbed nine bamboo swords, and faced Mu Yu in a match watched by Koshiro and Kuina.
• Mu Yu swiftly disarmed Zoro, then defeated him with a strike across the face after Zoro tried again with a Two-Sword Style stance.
• Zoro vowed to train until he could defeat Mu Yu, who accepted his challenge.
• The system awarded Mu Yu energy and a lottery draw for defeating Zoro, while warning that he had replaced Kuina and inherited the danger associated with her role.
• The system started a one-year mission for Mu Yu to strengthen Zoro’s resolve to become the World’s Greatest Swordsman.

Mu Yu defeated Zoro again, then urged Koshiro to show Kuina more affection as her father, not just treat her like another disciple. After Kuina overheard him, Mu Yu found her and challenged her to a match, which she accepted.

• Mu Yu defeated Zoro for the hundredth time, and Zoro ran off to train after promising to beat him.
• Mu Yu told Koshiro that treating Kuina exactly like the other disciples left her without the care she needed from her father.
• Kuina overheard Mu Yu’s words to Koshiro, broke a cup, and ran away.
• Mu Yu found Kuina on a country path and challenged her to a match.
• Kuina accepted the challenge and charged at Mu Yu.

Mu Yu defeated Kuina in their bamboo-sword match and challenged her belief that girls could not become the world’s strongest swordsmen. He encouraged her by mentioning the powerful woman Charlotte Linlin, leaving Kuina demanding to hear more about the sea.

• Kuina attacked Mu Yu, but he outmaneuvered her until a feint exposed his opening and the two returned to a standoff.
• Kuina accused Mu Yu of holding back because she was a girl, and he admitted he should have treated her as a swordsman.
• After several exchanges, Mu Yu disarmed Kuina but lowered his sword without striking her, explaining that she was not his enemy and that he had also hesitated because she was a girl.
• Kuina broke down over her defeat and feared that girls could never become the world’s strongest swordsmen.
• Mu Yu told Kuina that gender did not prevent strength and mentioned that Charlotte Linlin was a woman among the four Sea Emperors.
• Mu Yu pretended to leave before finishing his explanation, and Kuina stopped him and demanded that he tell her more.

Mu Yu told Kuina about the powerful women and abilities in the wider world, hoping to convince her that girls could become strong. Kuina left with renewed spirits, while Mu Yu received a system notification.

• Mu Yu described Charlotte Linlin's strength and enormous family, and Kuina admitted that people had innate differences.
• Mu Yu told Kuina about Amazon Lily and Boa Hancock, then explained Devil Fruits and their powers.
• Mu Yu introduced the Three-Color Haki and urged Kuina to keep pursuing strength regardless of her gender.
• Mu Yu claimed he was a Devil Fruit ability user, and Kuina ran off after telling him not to call her Senior Disciple Sister.
• Kuina's steps grew lighter as she ran, and a system notification sounded in Mu Yu's mind.

After learning about Devil Fruits and Haki, Mu Yu spent Energy Droplets to improve his swordsmanship and waited for the auspicious day to use his lottery draws. He won the famed blade Kanemoto, began converting it into an Okatana, and started a second draw that left him stunned.

• Mu Yu learned that his actions could twist the plot and increase the world's difficulty, then checked his abilities and Energy Droplet reserves.
• Mu Yu spent 2,400,000 Energy Droplets to raise his swordsmanship to LV6 and received the Iaido Slash skill.
• At midnight, Mu Yu used a lottery draw and won the Fifty Great Swordsmen blade Kanemoto.
• Mu Yu agreed to convert Kanemoto into an Okatana beneath the Divine Tree Hidden World.
• Mu Yu began his second lottery draw and was shocked by the prize.

Mu Yu drew a Level 40 Miyamoto Musashi Soul Tree and used its Two-Sword Style abilities to dramatically increase his strength. After revealing his tree-planting Devil Fruit ability, he asked Koshiro to teach him his true legacy, and Koshiro agreed to test him.

• Mu Yu learned that the Miyamoto Musashi Soul Tree granted him powerful abilities, especially when he used Two-Sword Style.
• The next day, Mu Yu defeated Zoro in a single move after Zoro had challenged him more than a hundred times.
• Mu Yu told the dojo that he was a Devil Fruit user whose ability let him plant trees that rapidly improved his swordsmanship.
• Mu Yu asked Koshiro to let him challenge him and inherit his true teachings, and Koshiro agreed on the condition that Mu Yu pass his test.

Mu Yu challenged Koshiro and was defeated twice, first by a light strike to the abdomen and then by having his sword snatched during his ultimate iaijutsu. Koshiro recognized Mu Yu’s potential but told him his sword was too light and too slow, leaving Mu Yu struggling to understand the lesson about sensing “breath.”

• Mu Yu surprised the dojo with his speed, but Koshiro defeated him with a single strike to the abdomen.
• Mu Yu accepted his loss and asked Koshiro to test his ultimate move, then prepared to strike at Koshiro’s neck.
• Mu Yu used the Causal Magic Eyes [Eyes of the Thiên Nhãn] and unleashed One-Sword Style: Iaijutsu, Gale Whisper, but Koshiro took Kanemoto from him.
• Koshiro praised Kanemoto, returned it to Mu Yu, and said his sword was too light and too slow.
• Koshiro told Mu Yu to learn to sense “breath,” but Mu Yu could not grasp what he meant.

Mu Yu struggled to understand Koshiro’s swordsmanship teachings, then spent a year enduring his brutal training and growing into a formidable swordsman. Koshiro ended their challenges, gave Mu Yu his final advice, and told him to train independently until he passed a final test to teach Isshin-ryu.

• Zoro challenged Mu Yu, lost to one strike, and vowed to train with three swords after Mu Yu promised to take their battles seriously.
• Mu Yu asked Koshiro to train him, and Koshiro repeatedly knocked him unconscious and pushed him through punishing lessons in combat, awareness, breathing, and swordsmanship.
• Zoro, Mu Yu, and Kuina continued challenging one another, inspiring the other Isshin Dojo students to train harder until an inconspicuous student defeated visiting dojo members.
• A year passed, and Mu Yu grew powerful enough to exchange blows with Koshiro, though he still could not counter effectively or grasp the principle of cutting only what he wished to cut.
• Koshiro refused Mu Yu’s next challenge, praised his talent and character, advised him to draw his sword only as a last resort, and told him to train alone until he passed the final test to teach Isshin-ryu.