Shuriken School - Season 1 Episode 14 The Old Master

Great Master Otomo is visiting Shuriken School, and holds a conference about the ancient art of eating rice balls. The class is bored silly and the Principal watches Otomo gulp down one rice ball after the other with suspicion. When Otomo sees that neither class nor teachers are interested, he announces that a Great Philosopher living up in the mountain above the town handed on this precious knowledge, which has enabled the hermit-philosopher to live over 300 years! The students, impressed, clamour to meet him.