Because they are twins, their faces look alike but their personalities are complete opposites! The older sister is active and good at both studying and sports, and she's the type that guys are attracted to—a typical popular girl. On the other hand, the younger sister is shy and introverted, completely overshadowed by her sister— a typical moe girl! But there's one thing she can win at... it's SEX! The shy younger sister forcefully seduces her sister's boyfriend! Turns out, the younger sister is a sex genius; her techniques are irresistible to her sister's boyfriend! Usually quiet, but when it comes to sex, she moans and aggressively takes the initiative!
