REBORN!

A mysterious baby named Reborn, claiming to be a hitman, appears before Tsunayoshi "Tsuna" Sawada and reveals that Tsuna has been selected to become the next leader of the Vongola, a powerful Mafia organization.

After Reborn's arrival, Tsuna encounters unusual individuals, including Hayato Gokudera, a member of the Mafia who seeks to eliminate him in hopes of becoming the Vongola boss. At the same time, Tsuna is compelled to assist the volleyball team, including his friend Takeshi Yamamoto, following a display of strength in the previous episode.

Bianchi, an assassin who believes love can overcome anything, tries to kill Tsuna in hopes of freeing Reborn's schedule to be with him. At the same time, a young assassin named Lambo also targets Reborn.

A mysterious girl named Haru begins following Tsuna, though her true target is Reborn. Believing Reborn is being held captive, she attempts to push Tsuna away in an effort to "rescue" him.

As Tsuna begins to adapt to his new reality, he finds himself targeted by Kyoya Hibari, the intimidating leader of the school's delinquents. However, Hibari's true focus is on confronting Reborn, leaving Tsuna somewhat in the crossfire.

A mysterious Chinese infant named I-pin arrives in Japan with the intent to kill Tsuna, setting off a tense and unexpected conflict.

Tsuna meets Kyoko's older brother, Ryohei, who is passionate about boxing. Ryohei enthusiastically tries to convince Tsuna to join the boxing club, but Tsuna is hesitant and unsure.

A former student of Reborn visits Japan to see Tsuna, and Dino helps teach him the responsibilities of being a Mafia leader.

Tsuna contracts a mysterious and embarrassing illness, forcing him to seek help from a female doctor who refuses to treat male patients. As the situation becomes increasingly complicated, Tsuna must find a way to convince her to help despite her strict policy.

Lambo is tasked with delivering lunch to Tsuna, but after accidentally colliding with I-Pin, who is carrying a box of nitroglycerin, a misunderstanding leads to a dangerous situation.

Tsuna must make a difficult decision when Haru and Kyoko accidentally consume a dangerous Gyoza bun, and only one antidote remains to save them.

Reborn enhances Gokudera and Yamamoto's skills through unique training programs that go beyond physical conditioning. Gokudera becomes jealous when he notices Reborn and Tsuna giving Yamamoto more attention.

On New Year's Day, Tsuna and his family participate in a traditional Vongola event, facing off against the Chiavorone Family in a high-stakes battle where the losing side must pay a fine of 100,000,000 yen.

Tsuna takes Kyoko to the zoo, hoping for a quiet and romantic outing. However, his plans are disrupted when his friends unexpectedly appear and create chaos throughout the park.

During winter at school, Tsuna's friends gather to help him babysit I-pin and Lambo, but instead of focusing on their duties, they become more interested in a snowball fight. Reborn takes advantage of the situation and turns it into one of his orchestrated challenges.

Reborn leaves Tsuna and his friends stranded on a remote mountain, leading to a situation where they become lost in the mountain's wilderness.

Tsuna struggles to recover from his injuries while dealing with frequent visits from his friends and the unexpected presence of Hibari in the same hospital.

On Valentine's Day, Kyoko and Haru visit Tsuna's house to make chocolates, unaware that Bianchi is there to assist them, causing Tsuna great concern. He and his friends must find a way to keep Bianchi from contaminating the sweets with poison.

A young boy named Futa accidentally collides with Tsuna, unaware that Futa is a valuable Mafia informant with perfect accuracy in his "rankings," making him a high-priority target and prompting Tsuna and his allies to ensure his safety.

Students at Namimori High are being targeted by a mysterious gang, and as some of the victims are Tsuna's friends, he takes it upon himself to uncover the group's identity and protect those close to him.

Following a fight between Gokudera and Chikusa, Tsuna, Yamamoto, Gokudera, Bianchi, and Reborn launch a mission to confront the enigmatic Kokuyo gang. Yamamoto quickly finds himself in danger upon arrival.

Bianchi and M.M. engage in a brief fight before Haru and Kyoko are marked for capture by the serial killer twins Jiji and Didi, acting on orders from Birds. Birds taunts Tsuna and his friends, forcing them into a situation where they must confront and attack Tsuna.

While Tsuna pursues Futa, the remaining group faces an opponent who claims to be Mukuro, overpowering them in their weakened condition. Their only hope is Tsuna's return, though he will have only one Dying Will Bullet left to use.

After discovering their opponent is not the real Mukuro, the group infiltrates Kokuyo Middle School to confront the real mastermind behind the attack. Facing overwhelming odds—Gokudera struggles without his Dying Will and must fight both Chikusa and Ken while the others are unconscious—hope seems lost until one of Mukuro's captives may provide an unexpected advantage.

Despite appearing dead, Mukuro continues to fight by taking control of those he struck with his trident, leaving Tsuna unable to act as everyone is under his influence. Just when it seems all hope is lost, Leon, Reborn's pet chameleon, emits an unexpected glow that hints at a possible turning point.

Tsuna gains a new ability with the Rebuke Bullet, enhancing his strength, but faces a formidable challenge as Mukuro continues to hold back his full power.

Following Mukuro's defeat, Tsuna and his friends advance to the next grade, but they are separated into different classes. To help them reunite, Reborn presents a challenge with the reward of changing the class roster. After celebrating at a sushi restaurant owned by Yamamoto's father, they discover they cannot afford the bill and must work to pay it off.

A burglar enters Tsuna's room at night, causing Tsuna to faint in terror; the next morning, he discovers the intruder has died. The group must quickly decide how to handle the situation to avoid legal consequences.

Hana, Kyoko's friend, blackmails Tsuna into arranging a meeting with Future Lambo, threatening to reveal that Haru is his girlfriend. A malfunction with the Ten-Year Bazooka results in a teenage Lambo with the mind of a child, who then goes missing.

Tsuna and his mother are invited by Reborn to a vacation resort, which requires traveling there by cruise ship. Upon boarding, Tsuna discovers some of his friends on the ship without tickets, and he must track them down before they are discovered.

Tsuna is taken to the back of Mafia Island after failing to prove his identity as the Vongola Decimo and begins a new training regimen with Colonello, another Arcobaleno, alongside Reborn. As the training intensifies, a rival Arcobaleno attacks the island with a large force.

Tsuna struggles with a school swimming requirement and receives training from Yamamoto, Gokudera, and Haru at a public pool, each using their own unique methods. They hold a competition to see who can help him swim the farthest, but Reborn interrupts with a dangerous-looking Vongola dolphin.

To settle a debt from the previous incident, Tsuna takes a job as a lifeguard alongside Ryohei, but they end up competing in a race against more experienced lifeguards. During a summer festival, Tsuna and his friends operate a food stand to earn more money, encountering both Hibari and a group of thieves along the way.