The six universes of "fusion", "ritual", "synchrony", "transcendence", "pendulum" and "connection" are connected in series with each other. The story of Yasufushi Igarashi, who has been a genius in the card game [Yu-Gi-Oh] since he was a child, in order to chase the person he hates and travel through it.
This is the story of the first four universes.
Intention: People should have the courage to do anything for the purpose