The Guardian of the Cloud's Charge is the 54th episode of the Katekyo Hitman Reborn! anime.
After the Cloud Ring conflict, Xanxus tries to retrieve Gola Moska. After Kyoya Hibari halts his attempt at retrieval, Moska goes on a rampage, shooting wildly at everyone, friend and foe. Back at Vongola Headquarters, it is revealed that the Vongola Nono living there is, in fact, a fake. Tsuna comes to the rescue of his friends and holds off Moska, at which time Moska attacks Tsuna only.