Editing Mako Tsunami (section)

=== Duelist Kingdom ===
Years after the shipwreck, Mako entered the Duelist Kingdom tournament, hoping to win the prize money to buy a new boat. He earned three Star Chips and spent much of his time fishing near the island’s cliffs. To attract challengers, he left fish cooking over an open fire near a Battle Box, strategically positioned by the sea to benefit his WATER-based Deck under the Field Power Source rule.

When [[Joey Wheeler]] stumbled upon Mako’s unattended fish, he and his friends decided to help themselves. Mako tried to intervene but was knocked into the water by a wave. Emerging with an octopus on his head, he scolded them for taking his food. After introducing himself, he shared his fish and recounted the story of his lost boat. Before they could leave, Mako hurled a harpoon into the ground, challenging Yugi to a Duel with two Star Chips each at stake.

Mako’s tactics took full advantage of the sea terrain, allowing his monsters to hide underwater and attack stealthily, a strategy he called “sea stealth attack.” Though [[Yami Yugi|Yugi]] struggled initially, he outsmarted Mako by manipulating the tide with "Mystical Moon" and defeating his monsters with “Burning Land.” Mako graciously accepted defeat, vowing to continue the tournament with his remaining Star Chip. However, he did not qualify for the semifinals.