[M013] A Training That Trades Pain for Pleasure — Staying Hard Through Repeated Ball Strikes, a Top Slave’s Potential Revealed

I don’t repeat. Still mapping where he ends. Pain. He stayed hard. That tells me something. 疼痛與快感來回交換的調教 —— 持續勃起忍受睪丸連打，一號奴的潛力開發 自從成功轉型之後，他可能已經不再是「一號奴」，而是一個「不分奴」。在針對同一個人進行不同時間的調教上，我有一個執著的習慣…

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