Three years has passed since the events of the first series. Hiromi continued training with her coach and became Japan's junior champion. Their common profits have also contributed to the coach being chosen as the first trainer of the Japanese Selection of Tennis and is arranged to head a trip with the youngest members of the team to USA. The relation between Hiromi and its trainer is narrower at personal level but it exceeds the teacher-student bond with great difficulty. (Source: AniDB)

High school freshman Hiromi joins the tennis club because of her admiration for Ryuzaki. Ryuzaki is a senior, who's the best tennis player on the team and also nicknamed "Ochoufujin", ("Madame Butterfly"), because of her elegance on the tennis court. However, the new coach, Jin Munakata, wants the inexperienced Hiromi to play in a forthcoming tournament. Due to this, Hiromi considers quitting tennis for good but, in the depth of her soul, she soon realizes that she loves tennis after all. She returns to the club and, under Munakata's coaching, her talent starts to bloom. In the end, Hiromi develops a strong emotional bond with her coach, not knowing that Munakata is risking his life because of a chronic illness. (Source: AnimeNfo)

Yusuke Urameshi is not exactly what you'd call an angel. In fact, some might call him down right devilish. But when he dies in an accident trying to save a child, he finds himself in the Spirit World. Unfortunately for Yusuke, his name is not listed in the Book of Enma, which means it was one big mistake! So he should return from the Spirit World, but must pass a few tests first, and become a detective of the spiritual world.

So now Yusuke works in the Spirit World as a half-dead, half-alive agent for Koenma, son of the ruler of the Spirit World. This position does have its disadvantages, especially when you're trying to enjoy your summer vacation and Koenma gets kidnapped! So now Yusuke must interrupt his summer fun to find Koenma and trade the Golden Seal of King Enma for his life. But if someone other then King Enma has the Golden Seal there will be chaos in the Spirit World! What's a half-dead spirit detective to do?

With the aide of his closest allies, Yusuke sets off for Magma Valley, to save the life of the one who saved his, and find out who's at the bottom of this evil conspiracy.

Action Duels, which allow duelists to soar and swing alongside their Duel Monsters, are taking the world by storm. Due to an evolutionary breakthrough, the "Solid Vision" system is now able to provide Duel Monsters with mass. Yuuya Sakaki is Yuusho Sakaki's son, the latter being the founder of You Show Duel School in Miami City. Yuusho insists that duels are not a tool of war, but rather are to bring smiles to people and thus introduced the concept of Entertainment Dueling. However, at the height of his fame, Yuusho disappears and fails to attend his duel with Strong Ishijima, the Action Duel champion. Although scarred by this sudden leave, Yuuya vows to become an Entertainment Duelist like his father. Several years later, in the midst of a battle with Strong Ishijima, Yuuya's desperation to win brings forth a miracle. His pendant begins glowing, turning his cards into Pendulum Cards, which enables him to perform a Pendulum Summon—a summoning method unknown to the world and himself—gaining him fame overnight. As a result, Reiji Akaba, CEO of Leo Corporation and founder of the elite Leo Duel School, starts producing new Pendulum Cards to incorporate Pendulum Summoning into the system. Thus, the mysteries that surround Pendulum Summoning and Yuuya's father start to unravel, and Yuuya learns bit by bit what it takes to become an Entertainment Duelist. [Written by MAL Rewrite]