--
Wisps of smoke rose from the Demon Prince's body.
He felt his hot blood coursing through his body as he held his spear. Waves of ominous and dark energy profiled from his body, causing the fabrics of space to tremble before his presence.
The Demon Prince stared at his surroundings with a little of resentment. Nobody aside from his was around; he's just surrounded with all sorts of machines that are created for the sole purpose of training. Still, it didn't stop him from resenting these objects due to the humbling experience they always brought to him.
That said, he knew that he's making decent progress. Previously, he could only last inside the gauntlet for a mere hour, and even then he would come out beaten and reduced to a pathetic state. Now, especially after his father's treatment of the curse, he's able to last for an hour and a half while also coming out relatively fine.