After a long time, I finally finished this story. Sorry for the delay, but I found it difficult to finish it:

CHAPTER V

The master stopped for a moment, and with a rod, he started hitting my penis, which was still tied to my abdomen. The pain was intense, but at least it was giving my testicles a break, although he alternated and gave me some blows to the balls from time to time. The vibration of the blows on my penis started to excite me, and little by little, it was dragging me towards the climax. The master noticed that and when I was seconds away from ejaculating, he stopped hitting me, thus frustrating my orgasm. You thought you were going to come, he said, laughing, don't forget why you came here, he said, you won't feel any pleasure here. I'll have fun denying you ejaculation as part of your punishment.

He put down the rod and started putting cables and electrodes on my genitals, around my penis and balls, and a metal dildo in my ass. Once he finished, he brought a box with controls and said, let's continue with electro-torture. You've surely felt the shock and pain when you get an electric current. Now you'll feel it in your genitals. Now you'll really scream and pull on those restraints, especially when it's on your balls. Without warning, he activated the controls, and I felt the first discharge on my penis. As I screamed, terror took over me, I had never felt such pain, and this was just the beginning. He continued administering discharges to the different electrodes, and when I felt it on my balls, it was as if the world had ended. I was no longer voluntarily pulling on the restraints, but the spasms were putting tension on them. And I was screaming at the top of my lungs. He continued rotating the electricity with his controls, but as expected, most of the discharges focused on my poor testicles.

The session continued throughout the night. After the electro-torture, the master continued alternating blows, clamps, and other forms of punishment on my penis and balls, and also, from time to time, exciting me and denying me ejaculation. I had no other option but to remind myself that this was the real torture session I had been looking for. Now I was naked, tied up in a basement, limbs securely fastened to the corners, totally exposed and helpless while my genitals were being tortured mercilessly and without any possibility of escape. The punishment to my balls was the central part of the torture, and the pain it caused was the most intense and went beyond what I was prepared to endure. I screamed and pulled uncontrollably, tried to beg for mercy through the gag, pleaded with him to stop, or simply wailed about my balls, my balls, while trying to twist in vain, only to elicit more laughter from my torturer, who, unmoved, continued punishing my testicles.

When dawn was breaking, and I was almost unconscious, my torturer stopped. Well, that's it, he said, it's time to finish. He connected a vibr...