Osomatsu-kun: Back to the Me no Deppa no Maki

Story

One day, Iyami found a hanging scroll in his home that had been handed down from his ancestors. When Iyami looked at the contents, he found that it was a portrait of a samurai who seemed to be his ancestor, raising his dentures. But Iyami was very surprised. "SYEEEEEEE!" He was very surprised because the samurai who looked like his ancestor did not have bucktooths. Iyami wondered. "My father told me that Iyami's family has had bucktooth for generations," he said. Then Osomatsu, the protagonist of the story, came to visit. Iyami quickly hid the scroll, but Osomatsu snatched it away and looked a...