This episode is episode 155, the first challenge. This is where fukasaku is teaching 火影忍者 the first steps to be a sage. The training is called "don't move" and he has to focus his natural energy to becom a sage.
火影忍者 learns sage mode 由 chanelling the flow of senjutsu chakra 或者 natural chakra into the body. He learns to use it on Mount Miyaboku after Jiraiya dies.
This episode is episode 155, the first challenge. This is where fukasaku is teaching 火影忍者 the first steps to be a sage. this training for his fight with pain
火影忍者 learns Sage Mode after Lord Fukasaku, informs Konoha of Jiraiya's death at the hands of Pein. He then tells 火影忍者 to come with him to Mount Myoboku to be trained 由 him in the sage arts, because it was originally Jiraiya's plan. 火影忍者 Shippuden Episode 154.
when gamutatsu puts the magical dildo in in his bum and he instantly becomes sage mode and the 9 tails is released whilst sasuke is getting killed 由 sakura