As Goku trains Gohan in the Hyperbolic Time Chamber, their intense sparring sessions fuel a secret, taboo desire. Gohan, under the guise of learning new techniques, grinds his cock against Goku's ass, making Goku's balls tingle. Goku, pretending not to notice, teaches Gohan the Kamehameha, but their roles reverse as Gohan pins Goku down, rubbing his cock against Goku's thigh. Goku, losing control, grabs Gohan's cock, "You want to show me your power, don't you?" Gohan nods, and Goku eagerly takes his son's cock into his mouth, sucking him off until Gohan explodes.