Chapter Summaries

A Dazai cosplayer was transported to the Jujutsu Kaisen world, where his body’s instincts restricted him to acting in character, and he discovered he could erase cursed spirits with No Longer Human. After learning from the Book that he was now the parallel-world Osamu Dazai and had been granted a usable copy of the Book, he reached the city and settled into a lavish suite.

• The cosplayer fell from a hillside into a world filled with cursed spirits while dressed as Boss Dazai.
• A cursed spirit attacked him, and his touch made it vanish, though his body only moved when he acted in character.
• The Book told him that he had been paralyzed in his original world, gave him an inferior Book bound for his use, and explained that he had become the parallel-world Osamu Dazai.
• He walked for nearly ten hours to reach the city, then used Osamu Dazai’s black card to buy a huge crab feast.
• He booked a presidential suite and decided to take advantage of his new identity and resources.

After severe abdominal pain and suicidal thoughts drove Osamu Dazai to hang himself near Jujutsu High, he met Masamichi Yaga, whose cursed energy and technique vanished when he touched him. Yaga first refused Dazai’s request to enroll, then called him back and agreed to take him to Jujutsu High.

• Osamu Dazai left the hotel despite intense abdominal pain and went to the woods near Jujutsu High to hang himself.
• Masamichi Yaga found Dazai hanging from a tree, and Dazai cut the rope, greeted him, and described suicide as a hobby.
• When Masamichi Yaga caught Dazai as he staggered, Dazai’s touch nullified Yaga’s cursed energy and cursed technique.
• Dazai asked to enroll at Jujutsu High, but Masamichi Yaga initially refused because enrollment had ended and Dazai was too old.
• As Dazai turned to leave, Masamichi Yaga reconsidered, called him back, and invited him to return to Jujutsu High with him.

After Masamichi Yaga brought Osamu Dazai to Jujutsu High, the narrator passed Yaga’s questions by declaring a desire to find a reason to live and persuaded him to allow a test for advanced placement. Alone in the dorm, the narrator studied with Dazai’s remarkable memory and found an urgent search for a sorcerer with the Reverse Cursed Technique, wondering whether Toji Fushiguro was involved.

• Masamichi Yaga questioned Osamu Dazai about his identity and reasons for joining the Jujutsu Society, then accepted his answers about seeking salvation and a reason to live.
• Osamu Dazai asked to skip ahead to the third year and offered to memorize the necessary material in two days, leaving Masamichi Yaga stunned.
• Masamichi Yaga gave Osamu Dazai books covering the next two years, arranged a single dorm room, and showed him around Jujutsu High.
• After Masamichi Yaga left, Osamu Dazai’s body searched the dorm for surveillance devices and escape routes before the narrator settled down to study.
• Osamu Dazai’s narrator browsed the Jujutsu Society’s dark web, found an urgent search for a sorcerer with the Reverse Cursed Technique, and wondered if Toji Fushiguro was involved.

After spending the night memorizing books and growing more conscious of his resemblance to Osamu Dazai, Osamu met his future classmates Sōsuke Mizukawa and Nozomu Sakai. The chapter ended with the three sharing breakfast and joking together after Sōsuke gave Osamu a handgun.

• Osamu studied through the night, passed out for four hours, and cleaned his room before Masamichi Yaga arrived.
• Masamichi Yaga took Osamu to the cafeteria and introduced him to third-years Sōsuke Mizukawa and Nozomu Sakai.
• Sōsuke Mizukawa and Nozomu Sakai invited Osamu to breakfast, where he eagerly ate extra crabs and chatted with them.
• Nozomu Sakai led Osamu toward hand-to-hand combat class while Sōsuke Mizukawa went ahead to prepare a surprise.
• Sōsuke Mizukawa gave Osamu a handgun, and Osamu joined him and Nozomu Sakai in playful banter and chasing around.

Osamu Dazai trained with Sōsuke Mizukawa and Nozomu Sakai, received his uniform, and learned that his first mission was against a Grade 1 Cursed Spirit. As the three headed to the assignment, Nozomu explained that Sōsuke’s older brother had died after the higher-ups sent their team on a similarly dangerous mission.

• Sato Ichima ended the training session and assigned Dazai an individual mission with Sōsuke Mizukawa and Nozomu Sakai as support.
• Masamichi Yaga gave Dazai his uniform and told him that his Nullification technique had been reported as suppression.
• Dazai told Sōsuke and Nozomu that his technique was Nullification, and they warned him to avoid the Jujutsu Society’s higher-ups.
• Dazai, Sōsuke, and Nozomu left for their mission, where the report revealed they had been assigned to a Grade 1 Cursed Spirit.
• Nozomu told Dazai that Sōsuke’s older brother had died protecting their team after the higher-ups sent them on a mission beyond their grades.

Dazai watched Sōsuke Mizukawa and Nozomu Sakai fight a Special Grade Cursed Spirit before erasing it with a touch, then left his classmates behind. Sato Ichima confronted him about the incident and took him toward the jujutsu higher-ups’ headquarters, while Dazai hoped they would not try to confine him.

• The assistant supervisor drove Dazai, Sōsuke Mizukawa, and Nozomu Sakai to a site where a Cursed Spirit was causing trouble.
• Dazai let the fog separate his classmates and watched them struggle against the Special Grade Cursed Spirit without intervening.
• Dazai touched the Cursed Spirit and made it vanish, then ignored his classmates’ anger and left the woods.
• Dazai called out Teacher Sato, who emerged from hiding and praised Dazai’s ability while demanding an explanation and a visit to the jujutsu higher-ups’ headquarters.
• Dazai agreed to go with Sato Ichima and questioned him for information, hoping the higher-ups would not try to imprison him.

Osamu Dazai faced Jujutsu Society’s higher-ups over his concealed cursed technique and his failure to help injured classmates, while anticipating an attack. During the ensuing assault by the Sorcerer Killer, Dazai escaped with the fleeing officials and found Sato Ichima dying beside a dead Assistant Supervisor.

• Sato Ichima questioned Dazai about his suicidal past, but Dazai hinted that he knew Sato was involved in researching cursed technique implantation.
• Dazai appeared before Jujutsu Society’s higher-ups and defended his actions, arguing that he had not committed a crime by failing to help his classmates.
• The Sorcerer Killer attacked the tribunal, killing one of the officials and sending the others fleeing.
• Dazai pretended to escape with the higher-ups, then went to a secluded grove and found Sato Ichima dying beside a dead Assistant Supervisor.
• Dazai refused to help Sato and walked away, lamenting that blood had dirtied his shoes.

The narrator took Toji Zenin to a hospital and used No Longer Human to remove a Cursed Technique affecting his wife, while revealing that Toji had also been set up. Toji agreed to serve the narrator for five years in exchange for a promised storyline that could grant his wish, and the narrator left by tram to avoid explaining the stolen car to Mr. Yaga.

• Toji Zenin confronted the narrator with the Inverted Spear of Heaven and demanded to know whether his wife could be saved.
• The narrator drove Toji to a run-down hospital where his wife was receiving chemotherapy.
• The narrator touched Mrs. Zenin and used No Longer Human to erase the Cursed Technique she had been carrying.
• The narrator told Toji that someone had set up both him and his wife, then offered him a storyline in exchange for five years of service.
• Toji accepted the deal and agreed to a Binding Vow, and the narrator left by tram rather than drive back to school.

After the Headquarters attack, Osamu Dazai distanced himself from Nozomu Sakai and Sōsuke Mizukawa, rose to Special Grade, and revealed his frightening past when Nozomu questioned him about the attack. He arrived at Headquarters with his classmates again, where their guilty expressions suggested they had something they wanted to tell him.

• Masamichi Yaga accepted Dazai’s account of the attack and gave the students several days off, while Dazai denied deliberately provoking his classmates to protect them.
• Dazai became the second publicly acknowledged Special Grade Sorcerer within a month and maintained a strained, distant relationship with Nozomu Sakai and Sōsuke Mizukawa.
• During a mission, Nozomu confronted Dazai with footage of the Headquarters attack and asked whether Dazai had acted deliberately.
• Dazai denied acting to protect his classmates, revealed his menacing presence, and challenged Nozomu to explain the gun calluses on his hands.
• Dazai returned to Headquarters with Nozomu and Sōsuke, noticing that Sōsuke looked guilty and both classmates seemed eager to speak.

Osamu Dazai rejected the Jujutsu Society higher-ups' plan to assign him guards, then struggled with his fear of losing himself and his wish to return home. After killing two sorcerers sent to follow him, he walked on with Toji Zenin, who questioned his past.

• The Jujutsu Society higher-ups told Osamu Dazai they would assign two Grade 1 Jujutsu Sorcerers to protect and monitor him, but he refused and left Headquarters.
• Osamu Dazai wandered alone through the outskirts, distressed by the possibility of becoming someone else and determined to return to his own world without forming close bonds.
• Osamu Dazai noticed a sorcerer following him and lured his pursuers into an ambush, where he and Toji Zenin killed two Jujutsu Sorcerers.
• Toji Zenin asked Osamu Dazai about his apparent experience with killing and his former life, but Osamu insisted he was an ordinary student.

After returning to Jujutsu High, Dazai found that Nozomu Sakai and Sōsuke Mizukawa were worried about him and had invited him to Lupin. When he realized they were out of contact on a remote mission, he feared the higher-ups might target them, but Mr. Yaga called to confirm they were safe and warn him about their plans for dinner.

• Dazai read apologetic and worried messages from Sōsuke Mizukawa, Nozomu Sakai, and Mr. Yaga, then returned to Jujutsu High and went to sleep.
• Nozomu Sakai invited Dazai to drink at Lupin after their mission, and Dazai accepted by message.
• The higher-ups of Jujutsu Society called Dazai to question him about the deaths of two Grade 1 Jujutsu Sorcerers.
• Dazai found the mission files in Mr. Yaga's office and learned that Nozomu Sakai and Sōsuke Mizukawa were assigned to a remote area without reception.
• Mr. Yaga called Dazai back, confirmed he was safe, and warned that Nozomu and Sōsuke planned to give him an unforgettable meal.

Osamu Dazai explored Jujutsu High, then discovered that his classmates Nozomu Sakai and Sōsuke Mizukawa had been killed at Lupin by an imaginary special grade cursed spirit that appeared as Oda Sakunosuke. Confronted with the truth of his attachments and the people he had treated as substitutes, Dazai carried their bodies out and called Toji Fushiguro for help.

• Dazai wandered around Jujutsu High, lamented his boredom, and discovered that the skin beneath his bandages was pale and sensitive to light.
• Dazai followed two classmates at a supermarket, secretly planted listening devices on them, and overheard that they planned to deal with a grade 1 cursed spirit.
• Higher-ups accused Dazai of killing two grade 1 sorcerers, but he denied the charge, blamed their cursed-technique recording, and ended the call.
• Dazai accepted his classmates' invitation to Lupin and brought flour, expecting to prank them, but found Sakai, Mizukawa, the bartender, and customers dead in a blood-soaked bar.
• An imaginary special grade cursed spirit appeared as Oda Sakunosuke, and Dazai realized he had treated Sakai and Mizukawa as substitutes for people from another world.
• Dazai refused to hurt the spirit while it wore Oda's likeness, warned it that he would kill it next time, carried his classmates out, and called Toji Fushiguro to Ginza.

After Sōsuke Mizukawa and Nozomu Sakai died, Dazai struggled with grief and nightmares before speaking with Mr. Yaga at dawn. He admitted he still had not found meaning in living, but said he might search elsewhere if he graduated.

• Toji Zenin offered to kill the cursed spirit, but Dazai said someone else would handle it and had him drive away with the bodies.
• Mr. Yaga told Dazai that the deaths were not his fault and urged him not to be hard on himself.
• Dazai endured a night of nightmares in which Oda Sakunosuke shot him and he repeatedly witnessed Mizukawa and Sakai die.
• Dazai found a letter addressed to him in Nozomu Sakai's room, but left it behind after seeing the words, “I'm too selfish.”
• At dawn, Mr. Yaga spoke with Dazai about his first year teaching and why he had hesitated to let Dazai join Jujutsu Society.
• Dazai said he still had not found meaning in living, and told Mr. Yaga he would search elsewhere if he got the chance to graduate.

Years after losing his purpose, Osamu Dazai continued attempting suicide and carrying out missions while waiting to meet the Jujutsu High trio. When Suguru Geto, Satoru Gojo, and Shoko Ieiri arrived, Dazai greeted them with a failed hanging, then returned to school with ice pops and played a prank on Masamichi Yaga.

• Dazai reflected on years of failed suicide attempts, missions, and loneliness, with the Red Scarf as one of the few things that remained unchanged.
• As new students arrived, Dazai tried to hang himself from his favorite tree and was discovered by Suguru Geto.
• Masamichi Yaga cut Dazai down, introduced him to Geto, Satoru Gojo, and Shoko Ieiri, and stopped him from running off to drown himself.
• Dazai completed a mission in Chinatown, bought bandages, and returned to Jujutsu High with ice pops for the new students.
• Dazai tricked Yaga into eating a wasabi ice pop, prompting Yaga to chase him down the corridor before letting the prank go.

Osamu Dazai reflected on his exhausting missions and warned Suguru Geto that idealism could break even a strong sorcerer. Teacher Yaga then assigned Dazai to lead Suguru Geto, Satoru Gojo, and Shoko Ieiri against a special grade cursed spirit, and the group set out with Assistant Supervisor Akikage Ishida.

• Osamu Dazai told Suguru Geto that he handled most special grade missions in Asia and urged him to be wary of a black-and-white view of the world.
• Suguru Geto declared that he could endure whatever hardships came, and Dazai agreed to watch how he fared.
• Osamu Dazai considered his bond with Teacher Yaga and remembered how Yaga had repeatedly defended and supported him.
• Teacher Yaga briefed Dazai, Suguru Geto, Satoru Gojo, and Shoko Ieiri on a dangerous special grade mission, warning the first-years to stay close to Dazai.
• Osamu Dazai boarded Akikage Ishida's car with the three first-years and wondered whether the special grade cursed spirit would prove interesting.

Dazai reflected on his search for a reason to live while traveling with Satoru Gojo, Suguru Geto, and Shoko Ieiri. When the Assistant Supervisor announced they had reached their destination, Dazai looked ahead but remained unwilling to move.

• Shoko Ieiri asked Dazai what he thought, and he joked about suicide methods instead of joining the conversation about Suguru Geto's Cursed Technique.
• Suguru Geto pressed Dazai about why he wanted to die, and Dazai briefly released an oppressive aura before asking whether living had any meaning.
• Dazai told Suguru Geto that he had joined Jujutsu Society to find the meaning of living, prompting Satoru Gojo and Shoko Ieiri to react.
• Dazai reflected that he had been searching for a reason to live since entering this world, where he had lost everything except Teacher Yaga, and admitted he was waiting for the plot and its prodigies to disrupt the balance.
• The Assistant Supervisor announced that they had reached their destination, and Dazai looked toward it without wanting to take a step forward.

Osamu Dazai accompanied Satoru Gojo, Suguru Geto, and Shoko Ieiri to Lupin, where his former classmates had died, but waited outside because the place brought back painful memories. After discovering the others had been possessed and the cursed spirit had escaped, he entered and began searching for a body, preparing to face the spirit and give it an answer.

• Osamu Dazai recognized Lupin as the place where Nozomu Sakai and Sōsuke Mizukawa had died and asked Satoru Gojo, Suguru Geto, and Shoko Ieiri to enter without him.
• Osamu Dazai waited outside, then went into Lupin when the others did not return after more than ten minutes.
• Osamu Dazai found Satoru Gojo fighting Suguru Geto and Shoko Ieiri, who had been controlled by the cursed spirit, and helped them recover.
• Suguru Geto and Shoko Ieiri realized the cursed spirit had escaped, while Satoru Gojo admitted he had forgotten to look for it during the fight.
• Osamu Dazai asked Suguru Geto to read the mission report and explained that he was searching for a body; he then continued looking through Lupin.

Osamu Dazai confronted a cursed spirit that recreated Oda Sakunosuke and briefly reunited him with Chūya Nakahara before Oda comforted him and vanished. After leaving Tokyo for an overseas mission, Dazai lingered in Huaxia, haunted by memories and dreams, then reluctantly departed after completing his assignment.

• Osamu Dazai encountered a scene from his past inside the cursed spirit, then pulled Chūya Nakahara into the illusion and sent him away using the Book.
• Oda Sakunosuke appeared, asked Dazai how he was doing, embraced him, and crumbled into dust when Dazai tried to reach him.
• Dazai emerged from the illusion with Satoru Gojo, Suguru Geto, and Shoko Ieiri, then left Tokyo on a flight to evade Masamichi Yaga and pursue an overseas mission.
• In Huaxia, Dazai ate an all-crab feast, suffered a stomachache, and spent the night reflecting on his homeland and dreaming of his past.
• Dazai completed the mission, stayed in Huaxia for two more days, and then reluctantly left the country.

After returning to Jujutsu High, Dazai learned that Masamichi Yaga had refused to hand him over to the higher-ups and secretly sent evidence of their wrongdoing to Toji Zenin. He rejoined his classmates, ate crab, and ended up napping through Yaga’s lesson.

• Dazai returned from abroad, and Masamichi Yaga told him the higher-ups wanted Jujutsu High to hand him over.
• Yaga insisted that he would never abandon Dazai and urged him to trust him and keep living, prompting Dazai to flee to his dorm.
• Dazai gathered evidence of the higher-ups’ past offenses and sent it to Toji Zenin in hopes of causing them trouble.
• After staying awake until sunrise, Dazai went to breakfast, met Suguru Geto and Satoru Gojo, and ate extra portions of crab.
• Dazai joined Yaga’s class to sleep while Shoko Ieiri stared into space and Gojo and Geto discussed food until Yaga struck them with chalk and his fist.

Dazai was rescued from the river by Teacher Yaga, who treated his high fever and urged him to call for help if he tried to kill himself. After Teacher Yaga left, Dazai chose to rest in bed for the night.

• Teacher Yaga pulled Dazai from the river and carried him back to the dorm.
• Teacher Yaga found that Dazai had a forty-degree fever, gave him medicine, and warned him against swimming in winter.
• Dazai protested when Teacher Yaga told him to choose another way to kill himself, and Teacher Yaga said Dazai should call him before attempting suicide.
• Teacher Yaga punched Dazai, tucked him under his blanket, and left the room.
• Dazai put on dry bandages, then decided to return to bed and rest.