Meitantei Hokenshitsu no Obasan(1990)

Meitantei Hokenshitsu no Obasan

Jinguuji and his friend dread the idea of going to the school's nursing room. Why? It's because of the mean, cut throat "auntie" who is a school nurse works there. Letting her tend the student's wound will only make them more in pain because she's never be gentle with anybody. Jinguuji's luck is however run short when one day, he and his friend was asked by her to help do some paper works in the nursing room. Little did Jinguuji knows he have to get involves in something bigger than his normal student's life from now on.