I guess that was the plan. Author probably wants to create a short slice of life manga and move on eventualy but they did not expect it to be so popular and the rest is history.
Reality is often not as good in manga or in any form of medium that portrays it. That's why many people escape to fiction to escape this cruel reality.
Good thing the teacher is a woman and the student is a boy. If the genders are reversed then this whole manga will get cancelled and this comment section will turn a war zone.
The Vice Principal is not fit to become a teacher and an educator. She broke every rule and cross the red line as a teacher by trying to blackmail and falsely frame a student and laid her hands on a minor. She should be fired and her teaching license revoked.