In this fourth installment of the series, the focus shifts to a beautiful and high-strung Japanese Language Teacher. After suddenly developing a massive and throbbing futanari anatomy, she finds herself unable to control her mounting desires. Her body has transformed into a high-stamina "cum-female" that refuses to subside no matter how many times she ejaculates. Overcome by her new physical needs, she uses her position to dominate her naive female students, drowning them in a relentless amount of cum during private lessons.