A fog-draped morning, Tsuna is called out to Nami Junior High (?) by a mysterious phone call. On the way there, he runs into Yamamoto, Ryohei, and Gokudera. It turns out that Gokudera had come looking for Tsuna, but Yamamoto and Ryohei had been called out by the same kind of mysterious phone call. Is this one of the Arcobaleno’s tests…? They await suspiciously, and before them, Mammon—or Viper—of the Arcobaleno appears. Mammon says he has taken Kyoko hostage. Regardless of Tsuna and the others’ distraught faces, Mammom coldly kicks off a new mystery-solving game.
If you want to save her, you'll
have to clear my trial.
Si quieren salvarla,
tendrán que superar mi prueba.
Si queréis salvarla,
deberéis superar mi prueba.
Se quiserem salvá-la, precisarão
completar o meu desafio.