TV-Series
Description
Karina Sakaguchi is a first-year student at Ooarai Girls High School who serves as the driver of the Rabbit Team, operating an American M3 Lee tank. She stands 145 centimeters tall with short light brown hair and dark blue eyes. Originally from Hitachinaka in Ibaraki Prefecture, she lives in the school's dormitory and has two older brothers.

Personality wise, Karina is best known for her impulsive, energetic nature, as she tends to act before thinking through a situation. Her enthusiasm is childlike and infectious, and she has a distinctive way of speaking, responding with "Ai!" instead of the standard "Hai!" Her mood can shift noticeably depending on what anime or special effects shows she has watched recently. Outside of battle, not much of her personal life is seen, but she is known to be an otaku with a deep love for anime and tokusatsu programs, activities that keep her constantly concerned about the remaining space on her hard drive. Early on in her sensha-dō experience, this impulsive and somewhat rash nature led her and the rest of her crew to panic and abandon their tank during an exhibition match against St. Gloriana's Girls Academy.

Her primary motivation is less about personal glory and more about a genuine enjoyment of action and excitement. It is revealed in supplementary materials that she was the only member of her team who had sensha-dō as her first choice for a mandatory subject, indicating a clear, initial interest in the sport. Academically, her favorite subject is physical education, which aligns well with the physically demanding role of a tank driver.

Karina’s role in the story, while not that of a main protagonist, is crucial as the driver for the Rabbit Team, the only all-first-year crew on Ooarai's sensha-dō team. She is an integral part of the team's tactical flexibility, and her driving skills become a key asset in several major battles. Her key relationships are primarily with the other members of the Rabbit Team, including the commander Azusa Sawa and the gunner Yuuki Utsugi. She interacts playfully with her peers, has a habit of mixing up names, and is known to tease the quiet Saki Maruyama.

The most significant development for Karina is her maturation from a nervous novice into a highly skilled and reliable driver. After the initial panic of her first match, she and the rest of her team become much more professional and composed in handling their tank. A notable example of her developed ability comes during the match against Kuromorimine Girls Academy. Against the Elefant heavy tank destroyer, her precise driving through narrow alleyways allowed the team to execute Operation Kelly Heroes, positioning the M3 Lee behind the enemy vehicle to exploit its inability to traverse its gun in tight spaces. Later in the same match, against the massive Jagdtiger, Karina displayed quick thinking and initiative. She came up with the idea to ram the enemy head-on while it was moving, preventing it from getting a clear shot. She then followed Yuuki's order to execute a violent left turn, using the Jagdtiger's own momentum to send it plunging into an empty canal.

Her notable abilities lie entirely in her driving. While her early technical knowledge about tanks was limited, leading her to drive mostly by feel, her practical skills improved dramatically through experience. She became fearless and creative behind the controls, adept at using tight city streets for cover and even executing risky ramming maneuvers in combat. Her driving proficiency is generally recognized as some of the best among the first-year students at Ooarai. Beyond her technical skills, her encyclopedic knowledge of anime and tokusatsu trivia is a consistent trait, and she maintains an enthusiasm for the KV-2 tank and marigold flowers as personal favorites.
Cast