Female club member Natsuhou has intense feelings for her advisor teacher Nakata, who is much older than she is. During an overnight training camp in the middle of the night, she decides to seduce him and slips into his futon for reverse cowgirl sex! Although Nakata initially refuses thinking about his wife, he cannot resist the allure of her young body and ends up ejaculating inside her. From then on, during the camp, soap play in the bathhouse, intense midnight sex with internal ejaculation, sex under swimsuits... Nakata finds himself drowning deeper and deeper in Natsuhou.
