Centers around Kouichi Hayase, a fourteen-year-old boy living a mediocre life, until an accident turns him into the pilot of a gigantic robot called "Linebarrel" and leads him to encounter a mysterious girl.

• Mamiko Noto
• Miyuki Sawashiro
• Tetsuya Kakihara
• Rie Kugimiya
• Kana Ueda
• Aya Hirano
• Jun Fukuyama
• Biichi Sato