Internal ejaculation on a female teacher. Under the guise of 'assisting with infertility treatment research' within the school, a new female teacher is taught the pleasure of vaginal ejaculation. Starting with vaginal ejaculation into a vagina made wet by toy torture, followed by semen masturbation where semen is scooped into the vagina. Ultimately, it leads to continuous insertion and continuous internal ejaculation of students' penises! By thoroughly and continuously releasing thick semen into the vagina, she gradually becomes a slave to uncontrollable internal ejaculation. A four-part series depicting a female teacher's internal ejaculation.
