Monami, a strict female teacher, has a sexual habit that is unbecoming of a teacher: she posts pictures of her exquisite body online and enjoys the reactions of the students. One day, one of the students finds the video and realizes that the owner of the huge breasts is Monami. With her secret discovered, Monami has no choice but to submit, and she ends up spending her days having her breasts squeezed around school. Next to the other students, and close to the students' families... Monami desperately tries to endure the pleasure, but her body responds to the relentless development of her breasts and nipples...