Yuuhi Toganou, a science enthusiast, invents his ideal girl named Momo-chan. However, things take an unexpected turn when a gyaru girl named Sara Ayanokouji interferes, causing a disastrous explosion that leads to a body swap. Yuuhi struggles to adapt to his new situation while Sara embraces the opportunity to experience being male, including their sexual desires. Can Yuuhi lose his virginity in time before getting stuck in his new body forever? Volume 2 also includes the extra story, "Kagakushitsu no Himegoto."
