See post #2711000 for Kasuga Maru base form.
Kasuga Maru has long dark brown hair in a folded ponytail held in place with a blue hair ribbon, and swept bangs. She has brown tareme-style eyes. Similar to Shibafu's fleet carriers, Kasuga Maru wears a white dougi top with a red hakama short skirt, and black socks. On her left hand, she wears a thick falconry glove.
Her rigging involves a flight deck strapped to her right arm, falconry-related steel pouches strapped to her torso, and steel platform boots. She is notably is modeled upon classic Japanese falconry unlike the majority of carriers in-game that are either archers, onmyoji, or marksmen.
Historically, the Kasuga Maru was last of the three Nitta Maru class passenger-cargo liners, but was requisitioned by the Imperial Japanese Navy and converted into a light aircraft carrier without ever seeing service as an ocean liner. One of her lines references an advertisement where she was anthropomorphized alongside her sister-ships even back in the 1940's.
As the escort carrier Taiyou, the ship only served as a ferry for aircraft, bringing them from the mainland to strategic airbases in the various islands that Japan had occupied before being sunk by a US submarine on August 18, 1944.