OVA 陰キャカップルが陽ギャル達とSEXトレーニングする話 - Season 1 Episode 1

The inexperienced introvert couple is surrounded by extroverted bitchy gals and is rapidly developed...! The fate of boyfriend Akiho and girlfriend Suzune, who have yet to have any sexual experience, changes dramatically when they accidentally meet their childhood friend Sayu, who has now become a full-fledged gal. The two experience their first sexual experience at the hands of the gals, and discover the melting pot of pleasure. When Suzune sees her boyfriend being taken advantage of by the three gals, she makes up her mind and pushes Akiho down...!?