It's Sumo Time: The Sumo Tournament!

Synopsis

Yoji Mukai, director of the Second Himawari Nursery School where Minoru goes, and his older brother Koichi (director of the First Himawari) are brothers who get along (?) terribly. At their suggestion, a sumo tournament between the two nurseries is held. Representing the Second are Hiro, Ikka, and — for some reason — Minoru. The two directors join in too. If Director Yoji loses, he has to take off his sunglasses and shave his beard. "We might finally see what he really looks like!" the staff buzz with excitement, but…