Yamato Takeru (Yamato Takeru, 1st grade) studied in the United States and was a Japanese who once played the ace running back "Lightspeed Masked Man 21" at Notre Dame University High School, also known as "The Real Lightspeed Masked Man 21"

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On the first day they entered Teikoku Academy, both Yamato Takeru and Honjo Takashi were directly promoted to the first team of Teikoku Alexander Team.

However, during the practice at Teikoku Academy, he wore the No. 22 jersey and did not wear eye protection.

In the Christmas Cup final, he put on the No. 21 jersey and eye protection again, regaining his status as the strongest running back in "Lightspeed Mask 21".

There was a one-on-one decisive battle with King Kong Agama, during which Agama felt danger and went on alert. Afterward, Agama pointed out that Sena had no chance of defeating Yamato.

In the finals, Declaration gave Leech Demon his right arm, and it was not until Wasena was forced to use his right arm in a one-on-one duel.

Possessing superior body balance, stronger footwork and route observation ability than Sena, he was the first to score a touchdown against a mud goal.

He was able to use multiple demon bat ghosts and was good at blocking Sena's body movement from the left and right with his huge body, but was later surpassed by Sena's four-dimensional running method.