Selected by Sawada Iemitsu as one of Tsuna's guardians, the Guardian of Haru, and awarded him the Haru no Vongola ring certified by his family members. During the training period, he worshiped Colonillo as his tutor. From then on, he always called Colonillo "master" and called himself Colonillo's number one disciple.
When he was at a disadvantage in the Battle of the Ring (during the duel between the Guardians of the Sun), he saw Kyoko’s arrival and recalled what happened when he was a child. He promised not to lose and used the special attack "Extreme Sun" to turn defeat into victory. ", defeated Lusilia, and obtained the Ring of Sunny.
Later, during the "Great Air Battle", he was rescued by Yuji, and he was kind enough to let Yuji save Lusilia.
Later, he used the "Extreme Sun" to destroy the stadium and rescued Takeshi Yamamoto and Prison Temple, but the ring was snatched away by Mammon and Bell. But in the end, Tsunayoshi defeated XANXUS and officially became the tenth generation of Vongola, and Ryohei also officially became the guardian of Haru, holding the "Vongola Ring of Haru" as evidence of the guardian. Ten years later, he is still the guardian of Qing, and he has control over the internal situation of the family. His personality is more serious than ten years ago, and his memory is still extremely poor, but he finally learned to write down important things in a notebook. When Vongola's headquarters was destroyed, he was on an overseas business trip (to Valia, Italy to meet Lusilia. Before leaving Japan, he left a message for Kurokawa Hana for Kyoko. Ten years ago, Ryohei wrote in his After seeing the photos in the room, I couldn’t accept it).
Thirteen days after modern Gang and others arrived in the future world, they returned home and rescued Kurom who had defeated Gu Luo ten years ago in the Obsidian Center. Convey the news to Gang and the others that Vongola's headquarters will break into the Milfiore family's headquarters in five days. Afterwards, he and others sneaked into the Japanese base of Miru Fiore, and because of Irie Shoichi's strategy, he was separated from the others, and then acted together with Yudera. After defeating Baishana, he was seriously injured in the battle with γ, and then it was turned to the Prison Temple to deal with γ.
After Irie Masaichi revealed his identity as an "undercover" to everyone in the Meronne base, Ryohei brought the Vongola Ring of Haru to the future ten years ago. After five hours of explanation, he finally understood what happened ten years later, and got the Vongola Box of Haru given to him by Irie Shoichi. Then everyone returned to ten years ago to accept the trial of the Rainbow Sons. After the trial, he returned to ten years later, and Gang and others will conduct special training for the battle of choice ten days later. Under the assignment of Dino ten years later, he and Rambo accepted the guidance of the prison temple and easily started the Han-I flow. box and let Han Woliu obey his orders.
Participated in the choice battle with everyone, although I couldn't appear. But after the selection battle, he and everyone fled back to Bingsheng, and then fought against Platycodon in the woods. When fighting Platycodon as Shura opened the box, he successfully changed the form of Hanga-ryu and became the first guardian of Haru. The most powerful weapon "Praised as the sun that shines brightly in the sky──Nakl's Limit Break". Although his punching speed was far beyond Kikyo's imagination, Tiehei could only use his super-enhanced body for 3 minutes. Coupled with the side effects of the activity of Haru's Flame, Tei's previous wound opened again, and he was seriously injured and was killed by Kikyo. defeat. Lusilia then arrived to help him with treatment.
In the end, Vongola I, who appeared because of A Gang's enlightenment, ordered the seven Vongola rings to be unsealed and obtained the original Vongola ring of Qing. Participating in after-school tutoring with the transfer student Aoba Momiji, the two unexpectedly got along well with each other. Ryohei believed that both of them understood each other because they were both boxers.
Because A Gang was attacked by a hostile family, he took turns serving as A Gang's bodyguard with other companions and the Simon family. However, he was still attacked on the day of the succession ceremony. After Takeshi Yamamoto was attacked, he was the first to find out that although he used the Flame of Haru to heal Takeshi Yamamoto, it was ineffective due to his excessive injuries.
In the succession ceremony, Liaohei and Ganga teamed up to fight Guli Enzhen and were unexpectedly defeated overwhelmingly. The Vongola ring they held was also damaged. After repair and upgrade, Ping used the strong flames of enlightenment to get a response from the ring, and successfully upgraded Vongola's ring to "Armband of Clear Light Ver. when you exert your greatest strength and shine like the sun). Afterwards, he followed Tsuna to Simon's Holy Land. On the way to search for Simon and everyone, he unexpectedly encountered Aoba Hongye. Ryohei transformed Hanga-ryu's form into Vongola's equipment, but only fought with him to a draw, because the Avengers did not recognize the existence of draw. Therefore, he and Qingye Hongye were arrested by the Avengers and sent to Avengers Prison. After the battle, the Avengers took out the first key entrusted by the first generation Simon and the first generation Vongola. Finally, after Gang and the others defeated D. Speddo, the Avengers released members Ping and Simon as agreed. Accept Libaun's invitation to join his camp. In the first battle, he originally planned to rush to Tsuna with Yamamoto and others to help, but was stopped by Hibari, who represented the "wind". He was angered by Hibari's disdainful attitude, but was easily defeated by Hibari because of his carelessness. In the end Only Jokudera and Yamamoto managed to escape.