It was time to take their training to the next level. He led the boy into the dungeon, as the boy kneels obediently in front of him, he fastened the collar around the boy's neck and secured the cuffs around his wrists. The boy's breathing quickened as he felt the collar and the cuffs, a physical reminder of his submission. He then positioned the boy on all fours, his face pressed to the floor and his buttocks raised high in the air. He reached for a large metal butt plug and coated it with lube before slowly sliding it into the boy's tight hole. The boy gasped at the intrusion, but He could see the pleasure mixed with the pain in his eyes, with that, he produced a ball stretcher and wrapped it around the boy's scrotum, pulling his testicles down and stretching them tight. The boy whimpered as the pressure increased, but he knew that this was just the beginning of their journey together.
