Please Teacher Episode 13

Kei and Mizuho are now happily married. One morning, Kei rolls over next to his wife, only to find that its his mother-in-law! With the in-laws at their house, Kei is in for a headache. What twisted plan does Mizuho’s mother have in store for Kei? And what will happen when Kei's classmates spot Kei and Mizuho together?!