Absolute Anime

Does anyone know in what episode konohamaru tells tsunade that he is going to be the 7th hokage and when she asks why the 7th he says because Naruto is going to be the 6th.

Email: Hinata_Violet@yahoo.com

please some one has to know
thanks for any help.

episode 221, the first shippuuden ep

221-222, its the first 1 hour special after the time skip