Midori Makibaoh is a small white racehorse. He looks more like a donkey with wide nostrils than other thoroughbred horses. However, with his guts and speed as his weapon, Makibaoh wins in every big race. At the beginning of his career, Makibaoh had trouble making his debut as a racehorse, because of his appearance and various disadvantages but Makibaoh had reasons to overcome his difficulties. A lifelong rival horse called Superhorse Cascade that Makibaoh needs to defeat. He is determined to win back his mother, a horse taken away to pay back the farm´s debt. Makibaoh has to overcome many hardships but thrives in a series of races to become a great racehorse.

Note: Won the 42nd Shogakukan Manga Award in the children category in 1997.