The National Tournament continues for Ryouma Echizen and the Seishun Academy Boys' Tennis Team as they face off against last year's semifinalist, Shitenhouji Middle School. As winners of the Kansai Regionals, Shitenhouji is one of the top contenders to win this year's tournament. What's more, each member of the Shitenhouji team has skills that are said to surpass their Seishun counterparts. Shitenhouji also has Kintarou Tooyama, another super rookie who rivals Ryouma in strength and technique. Seishun will have to push the limits of their abilities to stand a chance at defeating the Kansai champions in this East versus West matchup.

In a world overtaken by war and conflict, Hypnosis Microphones—devices through which a user channels lyrics that can affect the listener's brain and even cause physical damage—were introduced to the masses by the Party of Words. Revolutionizing warfare, Hypnosis Mics have transformed words and music into the sole weapons used by gangsters, terrorists, and the military, with physical weapons having been banned from use. As a result of swooping in during the chaos, the all-female Party of Words rules over the Japanese government. Women in Japan now live in Chuuouku, while men battle over surrounding territories outside the ward through rap battles. With intentions unknown, the Party of Words begins to gather the former members of the now-disbanded legendary rap crew The Dirty Dawg to fight not for territory or war, but for their respective crew's pride and honor in the greatest rap battle of all time. The first Division Rap Battle is about to commence, and practice is not something these rappers are going to need.

Long ago, the king of Orvelia, Kyle, defeated the demon king Angmund and brought peace to the world. However, one hundred years later, demons have been sighted in the forests, threatening humanity once more. A scouting expedition is sent to verify the claim but only one member returns. Meanwhile, Riheet, the leader of a dark elf mercenary group, plots to take over Orvelia to exact revenge against the humans who forsook their race a century ago. The knight apprentice Kasel, accompanied by the priestess Frey, sets out to rescue Clause, an old friend who went missing in the tragic mission. However, along the way, Kasel discovers that he is the son of the revered King Kyle and the only one who can wield the Holy Sword Aea—the same sword that slew the demon king. To fulfill this destiny, the young knight must embark on a perilous quest, unseal the sword, and end the fear instilled by demons. As Kasel's journey to bring hope to humanity and Riheet's vow for vengeance intertwine, what fate could possibly await them?

An organization in the future sends the specially trained Team Ogre to defeat Endou Mamoru and his team, to prevent him from influencing the world with his soccer. (Source: AniDB)