Touya's summer break takes an unexpected turn when his father hires four beautiful specialists to act as his tutors while he is away on business. However, the academic lessons quickly deviate into erotic encounters as Sara, Rio, and Nagisa use seductive methods to "educate" Touya in the arts of pleasure. Aided by a mysterious stamina-boosting drink, Touya finds himself overwhelmed by the provocative attention of his new tutors.
Touya continues his unconventional education, engaging in a provocative cosplay lesson with Sara-sensei before facing a strict test from Amane that turns into an intimate encounter. After navigating the jealousy of his tutors, Touya confesses his love to Rio, officially starting a romantic relationship with her. As Touya's experience grows, he finds himself caught in the middle of the competing affections of his beautiful teachers.