RIO, a dedicated English tutor with an H-cup figure, patiently guides her students—even those with only naughty thoughts on their minds. The story unfolds as a student is shocked to discover his private tutor works in the sex industry, yet finds himself irresistibly drawn to her charm. Alongside G-cup college student tutor Chika, RIO delivers intimate, sensual one-on-one lessons filled with intense gazes and seductive allure. This captivating work blends education and eroticism into a uniquely thrilling experience.