During summer vacation, sweaty female student Reo returns home from club activities and decides to take a shower at her teacher Matsuda's house since they live nearby. As she enters the bathroom, Matsuda catches sight of her soaked and see-through clothes revealing her voluptuous body with huge breasts that are about to pop out. He notices his erection and tries to hide it but Reo teases him by saying "What? You're hard?" She then presses herself against him, exposing his fully erect penis, and begins sucking on it vigorously while using her wet mouth and vagina to pleasure him. Unphased by Matsuda's resistance, Reo continues to deepthroat and stroke his cock until he reaches climax. This super abundant, busty J-style erotic encounter during summer break has just begun!