Chapter Summaries

Sing Sing and Deadpool escaped an Ōedo Family hot spring after defeating a group of henchmen, and Kumiko Yamaguchi recognized Sing Sing from a portrait. Sing Sing then tricked Deadpool into returning to New York to investigate Silver Peak, leaving him free to resume investigating the old school building later.

• Sing Sing and Deadpool fought off Ōedo Family henchmen at the hot spring and escaped using Deadpool’s belt.
• Kumiko Yamaguchi learned that one of the intruders was Hoshino Seiichi and recognized him from a portrait.
• In a Tokyo alley, Deadpool asked to join Sing Sing’s undercover high school life, but Sing Sing refused.
• Sing Sing persuaded Deadpool to return to New York and investigate Silver Peak by promising him a senior company title.
• Deadpool teleported to New York, while Sing Sing planned to investigate the old school building again after getting some sleep.

Sing Sing denied Kumiko Yamaguchi’s accusation that he had fooled around at a hot spring, then faced Eikichi Onizuka’s attempt to test him during P.E. He outmaneuvered Onizuka and kept the teacher’s prized photo book as leverage.

• Kumiko Yamaguchi questioned Sing Sing about a report that he had been fooling around at a hot spring, and he denied it.
• Eikichi Onizuka took over Class 3-D’s P.E. lesson and secretly spilled motor oil on the podium before calling Sing Sing up to the blackboard.
• Sing Sing crossed the oily floor without falling, stole Onizuka’s photo book, and wrote only the words “equipment list” on the board.
• Sing Sing warned Onizuka about the oil and threatened to use the photo book to embarrass him, then kept it as collateral.
• Onizuka realized that Sing Sing had turned his attempt to size him up into a loss of his prized possession.

Hoshino Seiichi stopped GPS boys from harassing a first-year girl in the cafeteria and defeated two of them. After one of the boys exaggerated the incident to Genji Takiya, Genji decided to confront Hoshino.

• Sing Sing recovered Eikichi Onizuka’s photo book after Onizuka promised him full marks on his exam.
• Hoshino intervened when a blond GPS member harassed a first-year girl in the cafeteria.
• Hoshino knocked down the blond and his companion, then took the dropped pork cutlets for his lunch.
• A fleeing GPS member told Genji Takiya a fabricated version of the fight and claimed Hoshino had challenged Genji’s authority.
• Genji and Izaki Shun headed to the cafeteria to meet Hoshino.

Sing Sing faced Genji Takiya after disciplining GPS members who had harassed a female student, and the two fought in the cafeteria. Genji admitted defeat after realizing Sing Sing had held back, while Sing Sing left him with a demand that GPS line up for food and stop wasting it.

• Genji Takiya confronted Sing Sing over attacking a GPS member and challenged him to a fight, agreeing that GPS would line up and avoid wasting food if Sing Sing won.
• Sing Sing caught Genji's first punch and evaded his attacks as they fought among the cafeteria tables and chairs.
• Sing Sing stopped his fingers near Genji's throat, then straightened Genji's collar instead of striking him.
• Genji tried to throw Sing Sing, but Sing Sing reversed the move and steadied him before he could hit a table or soup bucket.
• Sing Sing explained that he had held back because Genji had not bullied the female student, and Genji admitted defeat before promising to challenge him again.

Sing Sing trained Saeko Busujima in swordsmanship and fought Mitsuhashi Takashi and Ito Shinji after they accused him of having an affair with his disciple. A message from Yukio then revealed that the child they had been investigating was adopted, though Yukio had asked Mariko directly.

• Saeko Busujima reported how she had carefully separated an old newspaper and brought Sing Sing fried fish cakes.
• Sing Sing praised Saeko's control and explained that his sword technique focused on observation, judgment, and conserving strength.
• Mitsuhashi Takashi and Ito Shinji eavesdropped, decided Sing Sing and Saeko were having an affair, and confronted them.
• Sing Sing defeated Mitsuhashi and Ito in a fight, then punished them for eavesdropping and spreading rumors.
• Yukio messaged Sing Sing that Mariko had said the child was adopted, and Sing Sing realized Yukio had asked her directly.

Sing Sing investigated Kobayashi Amiko’s connection to Wolverine and learned the school’s confidential records were kept in a guarded building. He gathered clues about the patrol and planned another nighttime break-in, leaving the investigation poised to continue.

• Sing Sing questioned Yukio, who recalled that Mariko claimed Amiko was adopted from a collateral branch and had a Toyo High School invitation marked for a person under special guardianship.
• Sing Sing asked Yukio to obtain something Amiko had used and decided to investigate the school himself.
• Sing Sing tried to gain access to the records room, but Kumiko Yamaguchi warned him about its alarms and surveillance.
• Ichirai Hisako told Sing Sing that student records were in the North Administration Building and drew him the night patrol route.
• Sing Sing practiced with Saeko Busujima while watching the old school building, then left, intending to spend another sleepless night investigating.

Sing Sing broke into Toyo High School’s archives and uncovered secret files identifying his deskmate, Ichirai Hisako, as a Mutant and the monster beneath the school as Ueda Kenji, a former subject of experimentation. He realized the school concealed an ongoing program that transformed people into weapons and resolved to find more information about its leaders and missing victims.

• Sing Sing evaded a security guard and searched the school archives, where he found a section of records removed and obscured.
• Sing Sing used Wenxi’s signal-disguise probe to open a concealed electronic door behind a cabinet.
• Sing Sing found a secret file identifying Ichirai Hisako as a Mutant enrolled in his class, with her ability and handlers’ details blacked out.
• Sing Sing discovered Ueda Kenji’s file and recognized him as the mechanically altered monster beneath the old school building.
• Sing Sing learned that Ueda had been sent to the Underground Adaptive Correction Zone and concluded that the school was conducting human experiments.
• Sing Sing decided to seek information about Wolverine’s child, the missing martyrs, and the school’s management network.

Sing Sing found Kobayashi Amiko’s secret file and learned that she had no X-Gene despite being under the school Council’s special supervision. The next day, he saw her throw a bully with a judo move, then she confronted him for spying.

• Sing Sing discovered Kobayashi Amiko’s file, which showed she was a normal human placed under the school Council’s special supervision.
• Sing Sing escaped the school grounds during a commotion caused by students climbing the perimeter wall.
• Sing Sing tested Ichirai Hisako’s reaction with a drawing of transformed Ueda Kenji, and she briefly tensed when she saw it.
• Sing Sing found Kobayashi Amiko being harassed by three delinquent girls near the girls’ restroom.
• Kobayashi Amiko threw the leader into a trash can and chased the other delinquents away.
• Kobayashi Amiko spotted Sing Sing watching from the corner and challenged him.

Sing Sing learned that Kobayashi Amiko’s deadly martial arts came from the Yashida family’s training and that the school board was targeting her for a possible Healing Factor. Ichirai Hisako revealed she was a mutant and warned that the board planned to use Wolverine’s descendants in its mechanical chimera experiments.

• Sing Sing questioned Mitsuhashi and Ito about Kobayashi Amiko and learned she kept to herself, had a short temper, and was picked up by a black car.
• Yukio told Sing Sing that Mariko had arranged for Amiko to learn close-quarters self-defense while believing it was ordinary fitness training.
• Saeko Busujima asked Sing Sing for swordsmanship advice, and his improvised words inspired her to develop an unusual attack; she also mentioned hearing clanging in the dojo at night.
• Ichirai Hisako confronted Sing Sing about entering the archives, revealed her mutant armor and suppression tracker, and said the board turned mutants who disobeyed into material for chimera experiments.
• Hisako warned Sing Sing that the board had contacted Silver Samurai and intended to target Wolverine’s Japanese descendant; Sing Sing realized Kobayashi Amiko might possess a Healing Factor the board wanted for its experiments.

Sing Sing uncovered the connection between the school’s human-chimera experiments and Abraham Cornelius, a former Weapon X scientist who had worked on Logan. As the board’s review approached and the experiments threatened Kobayashi Amiko, Sing Sing decided he could not afford to investigate the tangled case slowly.

• Ichirai Hisako warned Sing Sing that the board would review its subjects’ activity records on Friday, and he told her to keep quiet and attend class as usual.
• Sing Sing sent Logan the school’s monster footage and Ueda Kenji’s files; Logan recognized Abraham Cornelius’s signature and recalled Cornelius overseeing his Weapon X experiments.
• Sing Sing reasoned that Cornelius needed the board’s funding and connections to run the school laboratory, while Logan offered to come help and Sing Sing refused to avoid alerting their enemies.
• Liu Jianyi reported that Logan had once been close to Itsu, but Itsu’s later disappearance and whether she had a child remained uncertain.
• Sing Sing connected Itsu’s disappearance, Mariko’s adopted daughter, and Yukio’s concealment, but decided to act quickly because Cornelius could target Kobayashi Amiko.

Sing Sing rejected the dean's attempt to force him to withdraw and learned that the school board planned to drive him out through its delinquent gangs. He challenged the entire school to fight at noon, drawing the attention of students and Genji Takiya.

• The dean summoned Sing Sing, accused him of misconduct, and pushed a voluntary withdrawal application across the desk.
• Sing Sing turned the application into a paper airplane, refused to leave, and warned the dean to summon the principal if the school wanted to expel him.
• Ichirai Hisako warned Sing Sing that the board used delinquent gangs to bully students into withdrawing or suffering an accident.
• Sing Sing went to the broadcasting room and challenged every student at Toyo High School to meet him on the playground at noon, calling out Genji Takiya by name.
• Serizawa Tamao, Mitsuhashi Takashi, Ito Shinji, the first-year judo club members, and Izaki Shun reacted to Sing Sing's challenge.

Hoshino Seiichi faced a massive crowd of delinquents on the athletic field and defeated wave after wave of attackers without seriously injuring anyone. As the crowd hesitated after their club leaders fell, Kobayashi Amiko watched in disbelief.

• Hoshino Seiichi insulted everyone gathered on the field, prompting dozens of delinquents to charge him.
• Hoshino Seiichi used precise strikes and footwork to defeat the first two waves, while Mitsuhashi Takashi, Ito Shinji, and Saeko Busujima watched.
• Genji Takiya and Serizawa Tamao observed Hoshino Seiichi's control and decided to let the others test him first.
• Hoshino Seiichi defeated karate, aikido, and judo club leaders Inoue Panghu, Meimiya Akihiro, and Kimura Okuma.
• Kobayashi Amiko recognized Hoshino Seiichi and watched as the remaining club members faltered.

Sing Sing defeated hundreds of Toyo High School delinquents and declared that he wanted a say in school discipline, not control of the school. After he knocked down Serizawa Tamao and Genji Takiya, he asked who the person behind them was.

• Sing Sing fought off hundreds of delinquents, while Mitsuhashi Takashi and Ito Shinji challenged him and were quickly defeated.
• Sing Sing told Serizawa Tamao and Genji Takiya that he wanted to stop the disciplinary office from forcing students out or isolating them without his consent.
• Serizawa Tamao and Genji Takiya attacked Sing Sing together, but he sent both flying into their armies.
• Sing Sing dusted himself off and asked who the person behind Serizawa Tamao and Genji Takiya was.

Sing Sing defeated Hayashida Megumi in a brutal fight at Toyo High School, then declared that the school would have no boss, only rules. The chapter ended with someone in the schoolyard voicing support for his declaration.

• Hayashida Megumi challenged Sing Sing, insisting that anyone who fought through Toyo High School would have to face him.
• Sing Sing and Hayashida Megumi traded close-range attacks, but Sing Sing resisted his strength and outlasted him.
• Hayashida Megumi kept attacking despite Sing Sing’s warnings, until Sing Sing struck him down with a blow to the back of his neck.
• Sing Sing stared down the dean of discipline, fastened his Zhongshan suit, and declared that Toyo High School would have rules instead of a boss.
• Someone in the schoolyard shouted that they supported Sing Sing.

Sing Sing used his victory over Toyo High School’s delinquents to establish control, while Ichirai Hisako warned him that the school’s leaders would retaliate indirectly. Beneath the school, Tennoji Hiroshi, Dr. Abraham Cornelius, and Shingen Yashida planned a traumatic test for Kobayashi Amiko and ordered surveillance of Hoshino Seiichi, leaving Amiko at risk and Silver Samurai preparing to act.

• Sing Sing found the delinquents at Toyo High School treating him as their boss, and Ichirai Hisako warned him that the school’s higher-ups might use underhanded tactics.
• Tennoji Hiroshi dismissed the dean of students’ concerns about Sing Sing and focused on Ueda Kenji’s deteriorating condition and Cornelius’s experiment.
• Dr. Abraham Cornelius argued with Shingen Yashida over the failed M-07 Sample and proposed testing Kobayashi Amiko for a healing factor by staging a severe accident.
• Tennoji Hiroshi approved the test within a week and said Ueda Kenji would undergo retrieval if it yielded no usable data.
• Tennoji Hiroshi ordered an investigation into Hoshino Seiichi’s possible ties to the 749 Bureau, and Shingen Yashida told an associate to watch him and prepare Silver Samurai.

Sing Sing took Ichirai Hisako to an abandoned construction site, where she demonstrated her armored power and told him about the school’s history of human experimentation. As she explained the Council’s ongoing experiments, four masked figures ambushed them, and Sing Sing prepared to fight.

• Sing Sing and Ichirai Hisako ate ramen, and Sing Sing asked her to show him her power.
• Ichirai Hisako formed towering blue samurai armor and demonstrated its strength by cutting through a concrete pillar.
• Sing Sing invited Ichirai Hisako to work for his bureau, then asked what she knew about the school and its underground experiments.
• Ichirai Hisako explained that the school had been built over a former Japanese Army experimental base and that the Council continued experiments on students.
• Sing Sing spotted a hidden observer, pulled Ichirai Hisako behind him, and faced four black-clad attackers who leaped from the darkness.

Sing Sing uncovered no leads from the dead ninjas and needed a DNA sample to learn what the Council planned for Kobayashi Amiko. He coerced Mitsuhashi Takashi and Ito Shinji into helping him obtain one by threatening to share an embarrassing video of them.

• Sing Sing disarmed and disabled four ninjas, but they killed themselves with poison before he could question them.
• Sing Sing took Ichirai Hisako home, then learned from Yukio that nobody could obtain a DNA sample from Kobayashi Amiko’s belongings.
• Sing Sing decided Mitsuhashi Takashi and Ito Shinji could sneakily collect Amiko’s hair or a used water bottle for him.
• Mitsuhashi and Ito refused, accusing Sing Sing of being a creep and insisting their delinquent pride would not let them steal from a girl.
• Sing Sing played a humiliating video of the pair groveling to him, and they gave in, with Mitsuhashi asking whether he wanted hair pulled out by the root.

Sing Sing sent Mitsuhashi Takashi and Ito Shinji to collect Kobayashi Amiko’s discarded water bottle for a biometric sample, then deleted a humiliating video in front of them. He secretly left the video recoverable in the system recycle bin.

• Sing Sing warned Mitsuhashi Takashi and Ito Shinji to collect only naturally discarded items and threatened them if they invaded Kobayashi Amiko’s privacy.
• Mitsuhashi Takashi tried to flirt with Kobayashi Amiko during PE, but she threw him into the bushes.
• Ito Shinji retrieved Amiko’s discarded water bottle from a recycling bin, and Sing Sing used a biometric probe to scan it and store the sample.
• When Amiko questioned their behavior, Sing Sing passed it off as a student council project about waste sorting and hair loss.
• Sing Sing deleted the video of Mitsuhashi Takashi and Ito Shinji begging for mercy in front of them, while secretly leaving it in the system recycle bin.

Sing Sing organized the school’s delinquents into a volunteer crew to search the archives for evidence of underground experiments. The public records yielded no direct proof, but Sing Sing found documents for an administrative evidence chain and a group photo connecting the principal to Shingen Yashida and medical consultant Abraham Cornelius.

• Sing Sing ordered the protection money spent on bread and oolong tea, then assigned lunch, dinner, and cola to students working on the school history project.
• Fumio Sato tried to keep the delinquents out of the archives, but Sing Sing intimidated him and divided the crew into assigned jobs.
• Genji Takiya’s GPS moved boxes, the Serizawa Army guarded the corridor, the Judo Club moved cabinets, Mitsuhashi Takashi and Ito Shinji checked borrowing records, and Hayashida Megumi kept workers in line.
• Sing Sing’s crew finished searching the public archives, and Sing Sing concluded that no evidence of underground experiments was kept there.
• Sing Sing collected renovation records, staff lists, and annual board reports for the 749 Bureau’s legal review, then found a group photo of Tennoji Hiroshi, Shingen Yashida, and Abraham Cornelius.

Sing Sing learned that Kobayashi Amiko was unrelated to Old Goldhead and had no Healing Factor, leaving his investigation into the experiments beneath the school without its suspected link. Yukio revealed Shingen Yashida had activated the Silver Samurai to kill Sing Sing, just as Liu Jianyi arrived with a lead on Itsu.

• Da Vinci told Sing Sing that Kobayashi Amiko had no genetic connection to Old Goldhead and tested negative for the Healing Factor.
• Sing Sing reconsidered the investigation, concluding that the school’s experiments sought a perfect fusion agent and that its apparent student reform was a cover.
• Yukio arrived after slipping into a split and told Sing Sing that Shingen Yashida had used a secret security fund to activate the Silver Samurai to kill him.
• Liu Jianyi rushed in with a battered diary and announced that he had found a lead on Itsu.