Hashimoto, a teacher at an all-boys high school in Tokyo, was panicking over his own mistake. The new transfer student was unexpectedly a girl—none other than Aya Fukuzawa, a stunningly beautiful petite-faced girl with massive, explosive breasts. With no girls' uniform available, Hashimoto hastily dressed her in a confiscated long gym jacket. The sight of her in that outfit instantly aroused the male students, who became overwhelmed with desire. Unable to resist the temptation of her soft, voluptuous breasts, their lust quickly spiraled out of control.