​”Summer break takes an unexpected turn for the high school archaeology club when a mysterious vessel unleashes a mind-altering ritual. As the light from the vessel engulfs them, they awaken to find their consciousness transferred into different bodies. Our protagonist finds himself inside the body of Kurahashi Yoshimi, the woman he adored like an older sister. Exploring the vulnerable and delicate sensations of being in a female body, he realizes the unjust differences between men and women’s experiences of pleasure. With the rest of the club members also swapped into unfamiliar bodies, they delve into a hidden realm of intense sexual desires. Will they find a way to return to their original bodies and escape this alternate reality?”​