Set in a girls' high school, "A Daily Life Where Sex Is Part of Everyday Routine" is a story of youth intertwined with friendship, romance, and club activities. Four close friends in the drama club gradually deepen their emotional bonds, while desire weaves its way through their daily lives. Erotic scenes such as blowjobs, intense creampie sex, and bareback intercourse blend seamlessly into their innocent adolescence, turning the school grounds into a playground of pleasure. Through realistic experiences, the film portrays how the girls' relationships grow increasingly intimate and passionately entangled.