Schoolboy gang-leader Matsugorou swears revenge when his lieutenant Koume's house is burned down by a land speculator in an insurance scam. (Source: The Anime Encyclopedia)

Hideyuki Toyotomi used to be a normal person, but gets dragged into mahjong games by his three degenerate companions and constantly loses in spite of the tiles he draws. (Source: Giant Bomb)

A next fierce fight is about to begin after Katta Kirifuda finally become the Duel Masters National Tournament champion. Japan's largest theme park, Duel Masters Land has appeared. With numerous fun attractions and events, Katta was also having fun. However, after meeting the mascot of the park, Duemouse, Katta got involved in a ridiculous conspiracy of the park. A shadow that invades the Duel Masters World, which is the mysterious team of duelists! The mysterious identity of the legendary card is to be revealed. A new stage and revolution of Duel Masters befalls Katta! (Source: Duel Masters Wikia)

As the whole world watches the Choujin Rugby game on TV, the Underground Space Emperor Hydra King has his Underground Space Supermen kidnap Robin Mask. Their aim is to lure out the Seigi Choujins and then attack them using the Robin Memo, which contains info on all of the Seigi Choujin's weaknesses. Watching on TV all over the world, Kinnikuman and the Seigi Choujins get together and head for Planet Hydra. (Source: Kinnikuman Wiki)