Midori Yamabuki, known as Yamabuki-sensei, teaches in Penguin Village and emerges as a pivotal figure in the lives of its residents. First introduced as Arale Norimaki’s educator, her influence stretches beyond the classroom into a romantic entanglement with Senbei Norimaki, the village’s eccentric inventor. After years of unrequited affection and comedic mishaps, Senbei’s proposal leads to their marriage, with Midori adopting the Norimaki surname. The union grants her motherhood to Turbo, a child bestowed with superhuman abilities via extraterrestrial origins.

Renowned for her kindness and patience, she counters Senbei’s quirks with steady composure. In *The Great Race Around the World*, her visage inspires Princess Front, a central yet indirect participant in the race’s events. Amid Penguin Village’s whimsical antics, her grounded nature provides a calming counterbalance.

The narrative charts her journey from classroom authority to familial cornerstone, though spin-offs and later works omit explicit elaboration on her growth. Her rapport with Arale and Senbei underscores her resilience and empathy, qualities steadfastly defining her across the series.