You do have to feel some pity for this slave. Princess Leya is not for the meek, and her slave know daily pain is a fact of life. Especially for this slaves balls which she loves to regularly. She gets a tight grip on them, isolating them from his body and then she attacks smacking them with little concern for his pain. It does very much please Leya though when slaves sacrifice their balls for her. It shows proper adoration, devotion and gratitude to being owned by her. But enough of that, there is more ball to do, it looks like this slaves nuts can take many more hits.