The female teacher who was assaulted on the school bus in place of a student (HAVD-853)

Female students on their way to a field trip are suddenly attacked by men. They are bound and sexually assaulted until they lose control of their bladders. A female teacher sacrifices herself to protect her students, enduring their wanton abuse in front of them until she loses control… The students, too, become victims of his penises! Unable to control her lust, what will the female teacher do…!?