

The Arcobaleno Trials Arc is an anime-exclusive arc that occurs when Tsuna and his Family traveled back to the past to obtain the Arcobaleno Seals and unlock the true power of the Vongola Rings. The story was supervised by Akira Amano.
All episodes — Arcobaleno Trials Arc
S5 E142The Strongest Seven
Jul 18, 200925 min
Back in the past, the 7 Arcobaleno are heading to Namimori to present Tsuna with their trials. Meanwhile, in the future, Irie is telling Tsuna and his friends the details before sending them to the past. He reveals that although months have
S5 E143Trial #1
Jul 25, 200925 min
The next day, Tsuna's class receives two transfer students, Monta Hariyama and Himeko Hariyama. During the break, Tsuna is attacked by Lal Mirch of their time period who reveals she will be the observer of the Arcobaleno trials. Colonnello
S5 E144The Arcobaleno Seals
Aug 1, 200925 min
Colonnello continues to overwhelm the two. He is defeated when Gokudera distracts Colonnello for Tsuna to use X-burner on him. Colonnello gives Tsuna the Arcobaleno Seal, which causes all the Vongola rings to glow simultaneously. Skull make
S5 E145Guardian Showdown! Cloud and Mist
Aug 8, 200925 min
Mukuro and Hibari continue their battle and Lal appears announcing this is the second trial. Skull calls his pet octopus to combat but Tsuna easily defeats it. Afterwards, he stops Hibari and Mukuro from battling each other and Lal announce
S5 E146Box Weapon Prototype
Aug 15, 200925 min
Tsuna, Yamamoto and Ryohei are called out to Namimori Middle School where they encounter Mammon, who reveals he has Kyoko hostage. Mammon begins Tsuna's trial with a set of riddles which leads them to various locations. The final riddle lea
S5 E147Catch the Wind
Aug 22, 200925 min
Tsuna returns home after completing the trial. The next day, Tsuna receives a letter from the Arcobaleno, Fong, who is also revealed to be I-pin's Martial Arts sensei. The letter tells Tsuna and his guardians to search for him around town.
S5 E148Two Successors of the Sky
Aug 29, 200925 min
Tsuna and his friends discuss who the remaining Arcobaleno are. At that moment, a woman wielding an orange pacifier, named Aria, arrives with Haru and Kyoko and reveals that she will give Tsuna his next trial. Afterwards, she takes Tsuna al
S5 E149Reborn's Trial
Sep 5, 200925 min
Reborn tells Tsuna and his guardians to assemble at Namimori Island for the next trial. When everyone reaches Namimori Island, the trial is revealed to be a battle of Tsuna's family against Reborn. Reborn knocks Tsuna unconscious and battle
S5 E150A Path Is Closed Off
Sep 12, 200925 min
While Tsuna's family is recuperating, Verde completes the first stage for his box weapons and decides to seek out the Vongola Rings to help him complete the second stage. All of the Arcobaleno, except Verde, gather at Namimori Shrine to dis
S5 E151Once the Rainbow Is Complete
Sep 19, 200925 min
Verde sends out robots to seek the Tsuna's missing two guardians, Lambo and Hibari. Hibari defeats his robot and Fong defeats the robot pursuing Lambo. Soon after, the other Arcobaleno's arrive to investigate the disturbance. Verde reveals
S5 E152A Boss' Resolve
Sep 26, 200925 min
Verde demands Tsuna and his guardians to surrender the Vongola Ring in return for the Arcobaleno's lives. Tsuna refuses to compiles as the rings will be needed for the future battles and declares they shall defeat Verde and save the Arcobal
S5 E153The Final Seal
Oct 3, 200925 min
Tsuna, with his Hyper Intuition, feels that Verde is nearby and finds Verde hiding in a nearby island. Verde declares his research is complete after gathering data on the Vongola Rings' Flames and states he will not need the Vongola Rings a
S5 E154To the Next Battle
Oct 10, 200925 min
Reborn recaps the events occurring between of the Vongola's invasion of the Millefiore base to Tsuna's battle against Genkishi and the revelation of Shoichi Irie.