jan 1, 2030 - Xyz introduction
Description:
Kazuma Tsukumo falls into a portal to the Astral World and finds the Emperor's Key. Later Dr. Faker and Byron Arclight recruit Kazuma in their seach for similar portals, Faker sacrifies both to open a portal to the Barian World.
Other portals start to open all over the world and bring Xyz Monsters to Earth, KaibaCorp reverse-engineers them and starts mass-producing them to capitalize on the widespread corncerns about Synchro Monster overuse after Yusei's Duel against Z-one, with Heartland becoming one of the major cities where they're most diffused and earning the nickname "Capital of Xyz"
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