Ririka Kato, mother of Marika and widow of the pirate Gonzaemon "Blaster Ririka" Kato, carved her legacy among the stars. Born in space, she navigated life aboard vessels before commanding her own ship as "Captain Ririka," later joining the pirate crew of the *Bentenmaru*. After marrying Gonzaemon and welcoming Marika, she traded piracy for motherhood, eventually securing a civilian role as an air traffic controller at New Okuhama Airport on the Sea of the Morning Star.

Her aesthetic mirrors her dual identity: as a pirate, she donned a gold-trimmed black coat, bicorne hat, and sword; in civilian life, she shifts between professional work attire and relaxed home wear. Vibrant and resolute, Ririka balances fiery determination with maternal warmth, often savoring wine or sake from sturdy glass tankards.

Strategically delaying revelations about Marika’s inheritance and Gonzaemon’s past until after her graduation, Ririka mentors her daughter when the *Bentenmaru*’s captaincy beckons. She coaches Marika in firearm use at a Tau Ceti military facility, stressing the weight of wielding power—a lesson facilitated by her alliance with Brigadier General Joshua Quadron.

During the Golden Ghost Ship incident, Ririka contributes tactical insights during crew briefings and shares camaraderie over meals in New Okuhama’s underground district. Witnessing Marika honored for resolving the crisis, she muses on the allure of such adventures. In *Abyss of Hyperspace*, her timely arrival during the Flint system’s activation aids in unlocking the Advaseele, underscoring her knack for navigating perilous situations.

Her enduring ties to former crewmates like Schnitzer and military figures bridge the worlds of law and piracy, reflecting a life straddling duty and rebellion. Ririka’s journey—from revered captain to steadfast mother and advisor—exemplifies a deliberate balance between nurturing Marika’s independence and honoring her own storied past, ensuring her daughter inherits both the burden and thrill of cosmic command.