|Arc||The Curse of the Rainbow Arc|
|Volume||Curse of the Rainbow Arrives!|
Reborn awakens from his dream, much to everyone around him's relief. Bianchi hugs Reborn and asks him if he was alright. Reborn asks if he said anything in his sleep, but Bianchi answers that she didn't hear a thing. As Tsuna is about to go to school, Reborn smiles at him and says that he had a favor to ask for. Tsuna thinks that Reborn is up to something no good, which scares him and Tsuna quickly goes off to school as he says to ask someone else. Once Tsuna runs away, Bianchi wonders who he got his cowardice from. Reborn thinks of Nana and Iemitsu, who never run away from problems unlike Tsuna, then suddenly noting that an Arcobaleno would go to the CEDEF headquarters.
In CEDEF headquarters, Iemitsu sneezes as he says that there were dozens of assassins wanting to kill him, to which Lal Mirch replies that it was probably only his family in Japan talking about him and suggests him to go back to Japan quickly before there's a rift between him and Tsuna, making Iemitsu think of Tsuna and Nana. Basil and Oregano suddenly enter and inform Iemitsu that there was an Arcobaleno that wants to meet him, who is revealed to be Colonello, having a favor to ask. In the Varia headquarters, Mammon asks Xanxus for a favor, and much to his surprise, Xanxus knew that it was about Arcobaleno, but said that it depended on the secret whether agree or not. In Kokuyo Land, Verde asks a favor of Mukuro, to which the latter comments that it seemed interesting and asks what he should do.
At the riverbank in Namimori, Enma looks around for cats that usually waiting for him for food and then finds them already eating a huge amount of cat food from someone. Skull reveals himself and demands help from Simon Famiglia for his favor in return for feeding the cats. Seeing that Skull had an Arcobaleno Pacifier like Reborn, Enma recognizes him as Arcobaleno. Fon stands on a lamp post and wonders who he could ask a favor from. After school, back at Tsuna's house, Tsuna was surprised to find the entire Chiavarone Famiglia gathered in front of his house and is approached by Dino and Romario, who were called by Reborn for a favor too. Reborn finally tells them that the favor he wanted them to do was to fight for him.