only descendant, she is chosen to become the new captain of the Bentenmaru. After joining her parents' former crew, she starts dividing her time between her studies, her part-time job and her duties aboard the Bentenmaru. It does not take long for her crewmates to confirm that Marika has what it takes to live up to her father's legacy. A mysterious girl who transfers into Marika's school after she learns of her heritage, observing her while she decides about becoming a space pirate or not. Just like Marika, Chiaki is heir to another pirate ship, the Barbaroosa. Despite claiming she does not like when Marika gets too friendly with her, she truly cares for her and always lends a hand when needed. The only breach in her cold facade is her passion for ice parfaits, on which she partakes regularly whenever she visits the Lamp Café. The Bentenmaru The Bentenmaru's beautiful medic and unofficial first mate, and one of the crew's veterans from Gonzaemon Kato's leadership. At Hakuho Academy, she acts as the school's doctor. The Bentenmaru's helmsman. At Hakuho Academy, he serves as adviser of the Space Yacht Club and homeroom teacher in Marika's class. The Bentenmaru's radar and sensor specialist who likes to assemble model ships in his free time. The Bentenmaru's electronic warfare specialist. She usually appears as a stereotypical nerd, constantly clad in her pajamas and thick coke bottle glasses, and eating snacks at her workstation. She is actually very attractive, but doesn't want anyone to notice, only using her looks as a last resort to get information from men. The Bentenmaru's tactical officer. He is a cyborg and was a friend of Ririka during her space pirate years. The Bentenmaru's engineer. While not busy, he enjoys collecting teddy bears. The Bentenmaru's navigator and psychic whose cryptic warnings usually anger some of her crewmates. Hakuoh Academy Marika's closest school friend and a co-worker at the Lamp Café. Additionally, she is a member of the academy's knitting club, and has taken up the challenge of creating new "cute" uniforms for Marika's pirating job. The President of the Space Yacht club and the heir of a major space shipping conglomerate. Following the first half of the series, she graduates and passes her position to Lynn. Later on, she runs away from an arranged marriage with the help of Marika's crew and Lynn, who is revealed to be her