JK Genkai Koubi: Goui Sounyuu de Bachibachi Nikuana-ka

The story follows Shouta, a young man who is unexpectedly drawn into an unconventional extracurricular venture when a female acquaintance approaches him with an unusual proposal. She asks for his assistance in establishing a brand-new school organization, which she boldly dubs the Sexual Help Club. Despite the provocative nature of her idea, Shouta finds himself entangled in the process of bringing this unorthodox club to life, setting the stage for a series of intimate and unpredictable encounters that challenge the boundaries of their everyday school routine. As events progress, the narrative delves into the evolving dynamic between Shouta and one of the girls involved. In the past, he had frequently teased her about her notably flat chest, treating her lack of physical development as an easy target for his jokes. However, circumstances have dramatically changed. Through her persistent habit of drinking milk, she has undergone a remarkable physical transformation, developing an extraordinarily voluptuous figure. This striking change completely reverses their previous dynamic, forcing Shouta to confront the stunning new reality of her mature physique while their relationship takes on an increasingly charged and intimate direction within the context of their newly formed club.