Yusuke Taguchi is a third-year high school student who has already secured his path to university through a recommendation, leaving him with considerable free time. When his homeroom teacher asks him to tutor a woman aiming for college, he agrees without much thought. To his surprise, his new student is not a typical high school girl but a gyaru named who is 23 years old, making her six years his senior. The story follows this unconventional student-teacher relationship, where the young tutor must find the best way to instruct an adult woman who has decided to pursue higher education later than usual. Their dynamic, marked by the contrast between Yusuke's studious and responsible nature and his student's mature yet playful gyaru personality, forms the core of this romantic comedy. The manga explores their growing connection as they navigate the challenges of test preparation and the blurred lines between tutor and pupil. Boku no Seito wa Otona Gal is written and illustrated by You Ikoma and has been serialized in Manga Cross since February 2021.