My Stepmother and Stepsisters Aren't Wicked manga volume 5 features story and art by Otsuji.

While attending the prestigious Eihou Ladies' Academy, Miya certainly has her hands full as she tries to balance days filled with learning to cook, attending lectures, and studying for exams. And though she's made a few friends, she still struggles to find her place in a school full of daughters from Japan's most distinguished families. So when it's announced that her class will be holding an election for class president and two of her friends are candidates, Miya learns just what it means to support the ones you care about!