Yugioh has been popular in the world of youth and sometimes adulthood. Dueling tournaments have been on for years, there are some for Jr. High schools and for adults. A man named Haruki, was a champion in dueling tournaments when he was a teen, he studied in a school called Raimon Jr. High. He joined the dueling club in that school. He and his teammates would win every youth dueling tournament. When he was an adult, he met a woman named Mitsuko. Mitsuko is a businesswoman and a great duelist. Haruki and Mitsuko became dueling partners since then. They would enter every adult team dueling tournament and come out as champions. Haruki has a rival named, Ryo. He would always end up dueling against him in the finals.

One day, Haruki confessed his love to Mitsuko, and she accepted. They then became a couple and had a child named, --------- -----. On their child's birthday, Haruki gave them a duel disk, he then showed them how to make his deck. After that, Mitsuko taught her child how to duel. They were all so happy.

But one day, Haruki was driving his way to the solo tournament. Suddenly a speeding car crashed to Haruki. He was sent to the hospital and the doctor said that he wouldn't make it, Mitsuko and the son went to the room to see Haruki one last time. After Haruki's death, Mitsuko stopped dueling, but their child continued to duel for their father. But since Haruki was not able to attend the tournament, Ryo became the new champion.

Ryo's winning streak continued and he had a wife and a son as well. Ryo then decided to start an organization called Nemesis. Nemesis contains people that duel for a price. Ryo took it further and decided to control the dueling world, deciding sometimes on who wins or loses. But he also left it the way it is. Ryo said that he only gives the score orders if he is bored, but his wife knew it was a lie.

Mitsuko told her child that they need to live with their cousin because she couldn't take care of them that much anymore, but she said that she will visit him on Saturday and Sunday. Mitsuko then brought her child to Inazuma town and let them stay with their relative. Mitsuko would visit them on Saturdays and Sundays. But one day, she didn't come. From that day, the kid never saw their mother ever again.

No one knows what Ryo's true intentions were, but it was like he was looking for someone, what does he want with that person? Will there be someone to fix the world of dueling back to the way it is? Find out in this story.