Kyousuke's younger sister Namika has been living apart from him for ten years. One day, she returns and begins to live with him again, but she has turned into an energetic Osaka girl.

Segua Kingdom has been losing the war against Ninterdo Empire but the tables are turned by the appearance of a boy called Gear. All the characters are parodies of Nintendo or Sega games such as Sonic the Hedgehog, Super Mario Bros., The Legend of Zelda etc.

Based on the first Wizardry game "The Proving Grounds of the Mad Overlord", a group of characters enter a dungeon to confront the ultimate wizard to prevent him from reaching an unstoppable power. On their way they meet up with a few new friends who have their own battles to settle, but their paths lay together.

The girls of the Usakame High tennis club, Tanaka Kinako, Suzuki Ayako, Sato Kurumi, and Nishiarai-Taishi Nishi, pursue their various dreams... This high school comedy kind of thing starts now. Usakame, the official rival of the high intensity comedy Teekyuu, depicts the mostly ordinary but slightly strange daily lives of four girls who devote themselves to practice. All members of Earth Star Dream, an Earth Star Entertainment idol unit of nationally famous voice actors, appear in the show! Sit back, relax, and enjoy Teekyuu's rival Usakame. (Source: Crunchyroll)