What will happen if Asami Mizubata, the most popular older sister who has elegant beauty and a nice body, is friendly and has a sense of humor, keeps having sex? She enjoys sex with a smile on her face the whole time, and naturally stands up for the man and serves him. And even though she's doing erotic things, she's classy, and even when she's sweating, she's beautiful even when she spreads her pussy and begs for it!