Mattsu and Yamma are two boys who live in Matsuyama. Their favourite pastime is looking for "the seven wonders of Matsuyama". One day, two men appear. What are the 7 hidden gems that they seek? Moburi, a high school girl who is like an older sister to the boys, also gets caught up in the adventure as this thriling story set in Matsuyama begins. Faced with all kinds of trouble, what will they choose for the future of their city?

The Sacred Book of the land of Eija has been rediscovered and with it the legends of a mysterious and all powerful ship. Now Princess Crystal of Megaronia has set forth on a quest to recover the ship and its ultimate weaponry. All that stands between her and total domination of the world is a small group of piratical misfits. Swords, sorcery and technology blend to form a mesmerizing tale of Good vs. Evil in Ellcia.

A side story taking place somewhere before the second half of the series, prior to Daba acquiring the L-Gaim Mk-II. Daba's comrade Leccee is captured by Poseidal's forces, and Daba and his rebels attempt to save her.

Shirakawa Hotaru, a girl who's in love with Inami Ken, finally confesses her love. From there on, they were happy couples, until one summer. Ken met a new friend, Tobise Tomoe, who is Hotaru's best friend. Tomoe seems to have her own charm. Ken, now have two paths to choose from; to be with Shirakawa Hotaru or Tobise Tomoe. Otherwise, he will lose them both.