Super Sentai S40E01 - The Exciting Animal Land

A young zoologist named Yamato Kazakiri is transported to Zyuland, a mysterious land inhabited by humans with animal-like features. When he returns to Earth accompanied by four Zyumans, Sela, Leo, Tusk and Amu, the planet is under attack by the Dethgaliens, who chose it as the venue for their 100th Blood Game, and with the power of the Champion's Proofs, artifacts that serve as the link between both realms, they transform for the first time in the Zyuohgers to repel the enemy attack.