Hina Origami (降神陽奈) serves as a Striker in Goryoukan Academy's Fifth Force combat unit. She is the middle sister of the Origami family, flanked by her older sister Akara and younger sister Koori. Financial constraints forced the three sisters to live together in low-cost housing without a bathtub, washing their hair in the sink. Tierra-sensei later arranged their transfer into Goryoukan Academy.

Physically, Hina stands 160.7 cm tall with measurements of 87-61-86 cm. She possesses dark blonde hair typically worn in a ponytail and golden eyes. Her blood type is O, and her birthday falls on March 10th. Personality-wise, she is notably sociable, reasonably sensible, and intelligent, with average fitness and constitution. Hina embraces an easygoing outlook, aspiring to fully indulge in life without excessive worry, though she harbors an undisclosed secret from her middle school years.

Her surname "Origami" signifies "descent" or "descending god," while her given name "Hina" combines the characters for "light/sun" and "apple tree." As part of the Fifth Force, Hina battles extradimensional Oburi threats using specialized abilities tied to parallel universes. She participated in academy activities like observing a simulation room duel involving her sister Akara, an incident which later resulted in food donations partially alleviating the Origami sisters' financial hardship.