Prologue

Good evening, Oniisan. Are you going to masturbate today too? Really? Well in that case, I can give you a hand. It's much better than doing it alone, right? Having an orgasm with the help of a girl feels much nicer anyway. Ufu, I can see it in your face. It's settled then. Let's work together to make your semen much stronger than usual. However, if you want my help, we have to agree to some rules first. The first rule is that you basically have to jerk off to a shikoshiko voice. On "shi" you move your hand upwards, on "ko" you lower it. Even though this shikoshiko voice sounds like mine, it's a separate voice. Think of it as a pre-recorded voice of mine coming from the sides. That's why you will be able to hear my voice simultaneously with the shikoshiko voice. It might be a bit weird, but it sounds a bit like this: (Shikoshiko 1) Let's give it a test run. I will play the shikoshiko voice a bit, try to synchronize with it. Of course it will work just fine with an unerect dick. Allright, begin: (Shikoshiko 1) Okay, stop. Simply stroke to the shikoshiko voice. Understood? The second rule is, without my permission you must not cum. Only when I say "Please cum now", exactly at that moment you are allow to ejaculate. The orgasm will feel so much better, if niisan ripens his semen with plenty of endurance. So please be patient until your balls are nice and full of oozing syrup. If by any means you feel like cumming anyway, you can just stroke with one finger at lightest pressure. For example, stroking the backside with your middle finger. Understood all the rules? Then this ends my explanation. You know what this means, right? Niisama's masturbation is under my complete control. It's all left to me. I happen to be a frightening girl, who will play with niisama until he gets crazy. After all, this audio play is titled "Masturbate to Perfect Domination Voice" If this is too scary for you, we can stop right here. Or do you wanna mastrubate by yourself?(Forcibly) If niisama wants to masturbate under my rules, just keep it playing. If not, please stop this recording right now Let's wait just a bit then.