My Friend Became Like the Wind. It's a very hot day and the Getta team is enjoying the new pool built by Monji. There Genki meets a new kid who he plays with during the day. Due to a mess caused by Monji and Asataro, the boy almost drowns but is soon rescued and taken to Saotome's house where he is welcomed as a respected guest. A robot demon approaches underground and the Robot Thrower kicks in but, due to the tight spaces of action, the enemy gets the better of it, capturing the heroes in a death grip. Genki's friend is actually an agent of the Demon Empire who controls the enemy monster but when he witnesses the fight scene, faced with the despondency of his friend, the professor and Mikiru, and remembering the affection that the earthlings they showed him from the beginning, he decides, to let the Getta Robot free, saving the life of Ryo, Hayato and Musashi. The little one then decides to escape from the base; Genki pursues him and discovers the true nature of him but this does not affect the friendship matured up to what point. The little oni, returned to the base, is imprisoned and Hidler climbs aboard the Demon Robot to attack the laboratory again. Getta intervenes with poor results but thanks to a message left to Genki by his friend, the professor discovers the weak point of the enemy who is mercilessly defeated. Peace is back but the kingdom of Demons does not forgive the little traitor.