The Guardian of the Mist, Arrives!? (霧の守護者, 来る!?) is the 50th episode of the Katekyō Hitman Reborn! anime series.
On Tsuna's side of the world, he is curious to know who is the Guardian of the Mist only to faint at the sight of Chikusa and Ken, members of the Kokuyo Gang. At the Vongola Headquarters in Italy, an attempted recon mission is enacted by Iemitsu to find out what happened to Vongola the 9th. When Tsuna regains consciousness, he and his family find out who really is the Guardian of the Mist.