The 'Men's Swimsuit Challenge' taken on by a group of close-knit girls has finally come to fruition in this unique project! In the public setting of a prefectural pool, they dare to wear swimsuits borrowed from junior boys, boldly exposing their flat chests. Led by Akana Ito-chan, the transgressive eroticism born from women wearing men's swimwear disrupts gender boundaries, with the mismatch between clothing and body反而highlighting femininity and stimulating viewers' desires. The thrill and transgressive eros, perfectly intertwined with scenes like the boys' locker room and the front-opening swimsuits, condense a sense of sin beyond gender and visual fetish. For those who love flat chests, exposure, and embarrassment, this is irresistible content, with many voices eagerly anticipating a series. A groundbreaking work that feels the new possibilities of Japan's erotic industry!