Slave AKU had been begging to begin his electro training with his Master, so Extremetop finally got his boy back in his chair to wire him up to test his limits. Hooded, cuffed, and tied to the chair Aku gets his beautiful slave cock wired up to his Master's device. As the levels of shock begin to rise in the slave's struggling cock, Extremetop breaks out his riding crop to keep Aku alert. As the crop whips around slave Aku's skin, his cock begins to swell and betray him as the electro shocks intensify. He moans and begs for more as Extremetop works his slave over good. In the end, Aku does a good job handling his Master's training and eagerly awaits returning for a much more intense electro session.