A shy couple, Kou and Miki, enlist the help of vibrant gals, Miku and Yuki, to explore their deepest desires and refine their sexual techniques. Through guided, passionate encounters, Kou and Miki learn to express their carnal urges more openly, igniting a fervent intimacy. Together, they joyfully dive into uninhibited pleasure, discovering newfound confidence in their relationship and the euphoric thrills of shared, unrestrained ecstasy.