A passionate advisor from Shima, exceptionally skilled in languages, is deeply impressed by the sexual techniques of foreigners she encountered during her overseas studies. Determined to share this knowledge, she establishes a Sex Research Club to teach her fellow club members. Leveraging her position as the school nurse, she develops intimate relationships with male students. Her enthusiasm and expertise lead to intense, boundary-pushing encounters, exploring creampie-filled experiences with cherry boys, all while embracing her role as a big-breasted female teacher.