howx006 — How to Academy: Satomi Mioka's Penis-Enlargement Sex Guide

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This instructional porn production claims its techniques can enlarge a penis and improve a partner's chances of orgasming from penetration. Veteran porn actor Genjin Moribayashi explains his training method while Satomi Mioka compares dildos, performs oral tests with average and large cocks, and has sex before and after the lesson. Staff members then try the routine, with the production claiming an increase to 15 centimeters and successful deep stimulation afterward. The program includes street interviews, consultations, dildo tests, blowjobs, cock training and several sex demonstrations, presented as an unscripted practical lesson to try before considering surgery.