Makoto and Yura Onoda are a newlywed couple who are sexually inexperienced. Yura, a shy and naive 25-year-old woman with attractive looks that garner men's attention, finds it embarrassing. Whereas, her husband Makoto, also 25 but quite opposite to his wife, entertains lustful thoughts about other women. Despite that, he remains physically faithful to Yura. Although they lack sexual experience, they are enthusiastic to explore the world of sex and practice as much as possible. Yet, the complexities of the realm require guidance, which they receive from friends, acquaintances, and pornographic media.