Nana Shirai is the live-in girlfriend of a man's best friend—and the woman he has secretly loved for years. While the friend is away, Nana admits that she felt the same and says they should have dated, then takes his hand and invites him to bed. His resistance collapses. They explore her fair, sensitive body, lick each other, and give in to hard sex with relentless thrusting into her shaved pussy. Afterward, they promise to keep the affair secret from his best friend, and Nana even gives him a cleanup blowjob.