Kouchuu Ouja Mushiking: Zack no Bousen-hen
甲虫王者ムシキング ザックの冒険編
A legend speaks of a mighty insect, the King of Insects, residing at the peak of a tree atop an island. Only those who reach the summit are considered worthy. Zack, known for hunting snakes, embarks on a journey to find the Heavenly Tree, aiming to claim the title of Insect King. Along the way, he encounters intense battles and teams up with a new ally named Kabutomaru, who wears armor.