Marika is a high school student living on a planet known as Uminoakeboshi. One day she finds out that her deceased father was the captain of the space pirate ship called the "Bentenmaru". More importantly, the one to inherit the captain's title has to be a direct descendant—meaning that Marika is now the captain of the ship.

• Shizuka Itoh
• Keiji Fujiwara
• Mikako Komatsu
• Kana Hanazawa
• Masaya Matsukaze
• Yui Horie
• Kenta Miyake
• Yoshitsugu Matsuoka