Bright, energetic, and utterly innocent, Riku Ichikawa makes her debut in a challenging special act: deep throat penetration. Initially refusing to participate in an irrumation shoot, she eventually accepted after persistent offers, facing this entirely new experience head-on. With no prior exposure, Riku reacts intensely to the stimulation deep in her throat. In the end, four cocks appear before her, and even as she hovers on the edge of unconsciousness, her mind is overwhelmed by the pleasure deep in her throat.