Chapter Summaries

Orochimaru witnessed Dan Katō die despite Tsunade’s efforts to save him, then pursued the retreating Sunagakure ninja before collapsing after a sudden pain. He awoke in Konoha Hospital with the memories of a twenty-first-century researcher who had transmigrated into his body.

• Tsunade tried to heal the mortally wounded Dan Katō as Orochimaru watched from a distance.
• Chiyo led the retreating Sunagakure ninja away, explaining that their attack had failed after Hatake Sakumo killed her son and daughter-in-law.
• Orochimaru caught up with Chiyo’s group, triggered their Explosive Tag traps, and cursed the Sunagakure ninja.
• A sudden pain struck Orochimaru’s head, and he fell from a tree unnoticed by the other Konoha ninja.
• Orochimaru woke in Konoha Hospital and realized a researcher from the twenty-first century had transmigrated into his body.

A transmigrator took over Orochimaru’s body and reflected on the setbacks and scientific ambitions that shaped his life. After confirming he could use ninjutsu, he cautiously befriended the Little White Snake and hoped his new life would bring better fortune.

• Orochimaru reviewed his memories, from his gifted childhood and successful missions to losing the Hokage position to Minato Namikaze and suffering later defeats.
• Orochimaru decided he would try to avoid the regrets and humiliations of his original life.
• Orochimaru formed a hand seal and transformed his appearance, confirming that his abilities were real rather than an illusion.
• A Little White Snake appeared behind Orochimaru’s neck, and he overcame his fear enough to hold and pet it.
• Orochimaru recalled his past life’s fatal snakebite and his new body’s connection to snakes, then hoped that entering this world would prove fortunate.

Orochimaru received the Snake Life Plot System’s advance Newbie Gift Package and gained Sebastian Shaw’s energy-absorption abilities, but the transformation left him unconscious for a day and a night. He awoke in the hospital hungry for external energy and eager to test his new power.

• The Snake Life Plot System bound itself to Orochimaru, promised rewards for triggering important plotlines, and offered him an advance Newbie Gift Package.
• Orochimaru accepted the package and received Sebastian Shaw’s abilities, prompting a painful transformation throughout his body.
• Little White Snake anxiously watched over Orochimaru as he lost consciousness and his cells continued changing.
• The Third Hokage visited Orochimaru’s hospital ward, and a doctor explained that Orochimaru was stable but resting in a dormant state.
• Orochimaru awoke after a day and a night, sensed his cells craving external energy, and became eager to test his new ability.

After leaving Konoha Hospital, Orochimaru tested his new ability to absorb and store energy, discovering that it strengthened his body and could support his pursuit of immortality. An Anbu ninja delivered the Third Hokage’s order for him to attend Dan Katō’s funeral the next day, and Orochimaru returned home to consider his future.

• Orochimaru was discharged from Konoha Hospital and used the Body Flicker Technique to reach a forest outside the village.
• Orochimaru absorbed energy from Explosive Tags, finding that his cells could store the energy and that it enhanced his strength and vitality.
• Orochimaru estimated that his cells could absorb about four Explosive Tags’ worth of energy, though releasing it consumed Chakra and stamina.
• An Anbu ninja told Orochimaru that the Third Hokage had ordered him to attend Dan Katō’s funeral the next day.
• Orochimaru ate dinner, returned to his residence, and lay down to plan his future.

Orochimaru trained around Konoha and discovered that the energy in his cells restored his stamina and seemed to strengthen his body. He then attended Dan Katō’s funeral, where he stood beside the grieving Tsunade.

• Orochimaru ran seven or eight laps around Konoha, and the energy stored in his cells replenished him and seemed to increase his strength.
• Orochimaru brought Shiro to the cemetery, where he found ninjas gathered for Dan Katō’s funeral.
• Orochimaru recognized young Fugaku Uchiha, Hizashi Hyuga, Shibi Aburame, and the Ino–Shika–Chō trio among the mourners.
• Orochimaru saw Tsunade crying beside Dan Katō’s relatives, including his infant niece Shizune, and silently stood with her.
• Hiruzen Sarutobi arrived and delivered a eulogy before the crowd observed a moment of silence.

After Dan Katō’s funeral, Orochimaru stayed with Tsunade as she mourned, and the two shared a rare moment of openness. When Tsunade revealed the First Hokage’s Crystal Pendant, Orochimaru’s system offered him a choice tied to taking it from her.

• The Third Hokage left Orochimaru to comfort Tsunade, and Orochimaru sent Shizune and the other mourners home before returning to the grave.
• Tsunade knelt alone at Dan Katō’s grave and wept while Orochimaru remained beside her in the rain.
• Tsunade asked Orochimaru why he had stayed, and he told her that Nawaki and Dan had mattered to him and that few people remained whom he cared about.
• Tsunade revealed the icy blue Crystal Pendant, which Orochimaru remembered returning to her after Nawaki’s death.
• The system offered Orochimaru a choice between kissing Tsunade and taking the pendant for a reward or refusing and losing access to the system.

Orochimaru kissed Tsunade to obtain the Hawk Eye ability, then fused with it and tested its extraordinary vision. He began practicing with the Sword of Kusanagi to bring his body up to speed with his new eyes.

• Orochimaru took Tsunade's pendant, kissed her cheek, and escaped the cemetery before she could react.
• Tsunade realized what Orochimaru had done and shouted after him as he fled.
• Orochimaru fused with Hawk Eye and discovered he could see great distances, track movements in detail, and perceive infrared heat.
• Orochimaru examined the crystal pendant and reflected on the risks of taking Tsunade's cursed necklace.
• Orochimaru spat out the Sword of Kusanagi and began practicing with it to adapt to his enhanced vision.

Orochimaru explored Sebastian Shaw’s energy-absorption ability and tested ways to develop it by absorbing energy from attacks. He decided to ask Tsunade to spar with him, hoping her powerful punches would help him grow stronger while also supporting his research.

• Orochimaru studied the limits of Sebastian Shaw’s ability and resolved to improve his defenses against Genjutsu and research his body’s energy capacity.
• He considered studying Uzumaki and Senju cells, especially Hashirama Cells, to gain stronger Sage Body traits and faster regeneration.
• Orochimaru tested absorbing his own Fire Release but found that converting energy into Chakra was inefficient.
• He tried hurting himself in various ways to absorb energy, then realized that sparring would be a better way to take hits.
• Orochimaru thought of Tsunade as a potential sparring partner and left his courtyard to find her.

Orochimaru found Tsunade unconscious from drinking, cared for her, and decided to help distract her with training. While reading her medical books, he triggered a system event and gained Photographic Memory, then began rapidly studying.

• Orochimaru entered Tsunade's house and found her passed out among empty liquor bottles.
• Orochimaru carried Tsunade to bed, covered her, and stayed when she grabbed his clothes and called him Dan.
• After Tsunade settled, Orochimaru left her room and decided that sparring could help her vent her grief and regain focus.
• Orochimaru went to Tsunade's study and triggered the system event Where Dreams Begin by opening a medical book.
• Orochimaru chose scientific research and gained Photographic Memory, then began reading through the medical material at extraordinary speed.

Orochimaru cooked dinner for Tsunade, then asked to spar with her and study Medical Ninjutsu. Tsunade agreed in exchange for meals, and their drinking and teasing left the once-silent courtyard feeling lively.

• After reading until nightfall, Orochimaru cooked dinner with the ingredients in Tsunade's kitchen.
• Tsunade woke and mistook Orochimaru for a thief, then ate his cooking and praised it.
• Orochimaru asked Tsunade to spar with him and teach him about Medical Ninjutsu for his research.
• Tsunade agreed to spar with him in exchange for being fed and invited him to read her books.
• Orochimaru and Tsunade drank and bickered together, and Tsunade felt happier.

Orochimaru tested his newly developed Mind-Body Technique against Tsunade, then comforted her as she grieved and cooked lunch for them. Afterward, he asked Tsunade to help him find study materials so he could continue his research.

• Orochimaru blocked Tsunade's punches and demonstrated that his Mind-Body Technique could absorb and release kinetic energy.
• Orochimaru and Tsunade fought across the training ground, destroying much of it as Tsunade vented her frustration.
• Tsunade knocked Orochimaru into a boulder, then broke down crying, and Orochimaru hugged and comforted her.
• Orochimaru made lunch for Tsunade, who eagerly ate his braised pork and stewed chicken with mushrooms.
• Orochimaru took Tsunade to find study materials, and she answered his advanced questions as he continued learning.

After years of training and research, Orochimaru encountered Jiraiya, who had returned to Konoha after teaching Nagato, Yahiko, and Konan. Orochimaru attacked him and confronted him about Tsunade’s grief and hemophobia after Dan Katō’s death.

• Orochimaru improved his stamina by sparring with Tsunade and advanced his biological research in her basement laboratory.
• Two and a half years later, Orochimaru went outside and encountered Jiraiya, who had returned after three years away.
• Jiraiya explained that he had spent the time teaching Nagato, Yahiko, and Konan, and said he was glad Orochimaru had not killed them.
• When Jiraiya asked about Tsunade, Orochimaru struck him and told him that Dan Katō had died in Tsunade’s arms, leaving her with hemophobia.
• Orochimaru accused Jiraiya of being absent while Tsunade suffered and continued beating him as Jiraiya stopped resisting.

Orochimaru reunited Jiraiya with Tsunade over a lavish dinner after giving Jiraiya a carefully restrained beating. As the three companions caught up, Jiraiya learned about Orochimaru and Tsunade’s lives and saw how much Tsunade still struggled.

• Orochimaru beat Jiraiya, then told him Tsunade would be home for dinner and asked him to buy good liquor.
• Orochimaru prepared a large meal, and Tsunade learned that Jiraiya had returned after three years away.
• Jiraiya arrived for dinner, where Tsunade scolded him and Orochimaru revealed that he had cooked the food.
• Jiraiya praised the meal before learning Orochimaru had made it, and Tsunade noticed Jiraiya’s fresh injury and said he deserved it.
• Jiraiya asked about their plans, and Orochimaru described his training and research while Tsunade said she spent her time keeping him company, caring for Shizune, and drinking.

Orochimaru rejected the system’s offers to work with Tsunade or teach with Jiraiya and chose doubled comprehension, then invited Tsunade to bring Shizune to live with him. As Tsunade continued drinking and Jiraiya left, Orochimaru tested his new ability on his medical research and developed new ideas for future experiments.

• After Jiraiya said he would write books and search for a successor, Orochimaru received three choices from the mechanical voice about the Sannin’s parting ways.
• Orochimaru dismissed the first two options and chose to go it alone, gaining doubled comprehension.
• Orochimaru asked Tsunade to bring Shizune to stay with him, and Tsunade agreed to bring her the next day.
• Jiraiya left as the three drank in silence, and Orochimaru reminded Tsunade to moderate her drinking and buy clothes for Shizune.
• Orochimaru reviewed his Medical Notes and used his improved comprehension to solve old problems, devise new approaches, and plan further research involving Hashirama Senju and Mito Uzumaki’s cells.

Orochimaru ended his sparring with Tsunade after realizing his body had reached its energy limit, and decided to focus on researching Hashirama and Uzumaki cells. Tsunade took Shizune shopping and encouraged her to study Medical Ninjutsu, while Orochimaru left Jiraiya behind after provoking him.

• Tsunade and Orochimaru sparred as Jiraiya and Shizune watched, with Orochimaru absorbing the force of her attacks until his body's energy reached its limit.
• Orochimaru stopped the sparring and decided to research fusing Hashirama Cells with Uzumaki Clan cells.
• Jiraiya mocked Orochimaru's fighting style, so Orochimaru flicked his forehead and challenged him to become a training partner.
• Orochimaru declined Jiraiya's challenge and returned to his laboratory to test the hypotheses sparked by Doubled Comprehension.
• Tsunade took Shizune to the shopping district and encouraged her to study Medical Ninjutsu.

Orochimaru was summoned by Hiruzen Sarutobi and appointed to lead Konoha’s research into Hashirama Senju’s cells. He accepted the project and gained the Sonido space Ninjutsu from his system.

• An Anbu ninja summoned Orochimaru to meet Hiruzen Sarutobi at the Hokage Residence.
• Hiruzen Sarutobi offered Orochimaru leadership of a research team studying Hashirama Senju’s cells and their potential use.
• Orochimaru agreed to lead the project, while warning that he could not promise success before examining the data.
• Hiruzen Sarutobi gave Orochimaru volunteer records and Tobirama Senju’s human research notes, along with instructions for the project.
• Orochimaru accepted the system’s research-project choice and received Heavenly Ghost Evasion (Sonido).

Orochimaru tested his newly acquired Sonido, then missed the time while studying research materials and arrived late to Shizune’s birthday dinner. At dinner, he revealed that Hiruzen had assigned him to oversee research concerning Tsunade’s grandfather, before the conversation shifted to Shizune’s classmates.

• Orochimaru tested Sonido and found that it let him teleport rapidly while consuming Chakra.
• Tsunade found Orochimaru absorbed in his workshop and reminded him that he had promised to cook for Shizune’s birthday.
• Orochimaru prepared a lavish dinner, and he, Tsunade, Jiraiya, and Shizune celebrated Shizune’s birthday.
• Orochimaru told Tsunade and Jiraiya that Hiruzen had assigned him to oversee research concerning the First Hokage, and Tsunade accepted that she could not change the decision.
• Orochimaru asked Shizune about her Ninja Academy classmates, and she named Kakashi Hatake and Obito Uchiha as the top and bottom students.

Orochimaru began officially researching Hashirama Cells in a Konoha underground laboratory while balancing his work with cooking for Tsunade and Shizune. By Year 39, experiments on human subjects had caused repeated deaths, and Orochimaru’s own test with Uzumaki Clan cells showed relatively mild rejection as the research continued under pressure from Konoha’s leaders.

• Orochimaru told Shizune and Tsunade that his new mission would keep him busy, then agreed to make extra food for Tsunade and refused Jiraiya’s request to eat for free.
• Orochimaru entered Konoha’s forbidden underground laboratory and received a small sample of Hashirama Cells for research.
• Orochimaru spent the next half year working long days in the laboratory while Shizune helped prepare ingredients for his meals.
• A researcher reported that Experiment Subject 20 had died, Subject 33 had severe rejection, and Subject 7 had mild rejection after experiments had killed more than ten people.
• Orochimaru examined Subject 7’s stable results and reflected that he had secretly tested an Uzumaki Clan cell agent on himself, while Hashirama Cells remained far more difficult to handle.

Orochimaru expanded his clan-cell experiments but realized he needed the Second Hokage’s deeper research materials. He infiltrated Konoha’s Sealing Jutsu Forbidden Area and chose a secret approach to earn a formula for fusing Uzumaki cells.

• An Anbu ninja delivered blood and tissue samples from several clans to Orochimaru, who began researching Uchiha and Hyuga cells.
• Orochimaru divided the clan-cell projects between himself and his assistants, but his research slowed because the Third Hokage’s materials lacked deeper results.
• Orochimaru decided to seek the Second Hokage’s research materials in Konoha’s forbidden area rather than ask the Hokage for permission.
• Orochimaru left Tsunade’s residence at night and approached the guarded Sealing Jutsu Forbidden Area, where Mizuma and Tajima were on watch.
• A mechanical voice offered Orochimaru two rewards for infiltrating the area, and he chose to sneak in for the Uzumaki Clan cell fusion agent formula.

Orochimaru raided Konoha’s forbidden ninjutsu grounds to memorize sealing techniques and research materials, then used a newly obtained Uzumaki cell-fusion formula to guide his experiments. The chapter ended with him returning to Tsunade’s house, where Tsunade was out gambling and Shizune helped him cook.

• Orochimaru entered the forbidden grounds undetected, found Impure World Reincarnation and Uzumaki sealing techniques, and memorized the scrolls before dawn.
• Orochimaru repeatedly visited the grounds in the following days and began studying the Uzumaki Clan Cell Fusion Potion Formula, which required prepared Hyuga cells.
• Orochimaru applied the formula’s principles to his Hashirama cell research, involving Uchiha tissue and impressing his laboratory researchers when experiments showed it could suppress the cells.
• Orochimaru returned to Tsunade’s house at dusk and learned from Shizune that Tsunade had gone gambling.
• Orochimaru cooked with Shizune and reflected on how she had gradually become his kitchen helper over the past few years.