Around the uterine ostium, the innermost part of the vagina where this busty girl shows an abnormal reaction. Grab the rampaging boobs and repeat the piston repeatedly, and at a stretch with a ridiculous ejaculation to the uterine ostium that is irresistibly opened with the climax of the face that should not be shown to others. At that time she relaxed and was no longer Aimi-chan, as you all know.