Mafuyu Kirisu is a strict and disciplined teacher in the anime series 'Bokutachi wa Benkyou ga Dekinai' (We Never Learn). Known for her cold demeanor and high academic standards, she initially appears stern and unapproachable. However, as the series progresses, her caring and supportive nature is revealed, especially towards her students. Despite her serious exterior, Mafuyu has a softer side that occasionally emerges, particularly in humorous situations, making her a multifaceted character. Her role is central to the development of the main characters, influencing their academic and personal growth.