The protagonist of the Brave Witches anime, Karibuchi Hikari is a witch from Fuso and the younger sister of Fuso Navy's Karibuchi Takami. She is a member of the 502nd Joint Fighter Wing and the partner of Kanno Naoe.

Background
Hikari entered Sasebo navy military school to become an aerial witch like her sister. When a replacement witch was needed in Europe, she volunteered and was sent to Europe as a sergeant for a logistics mission at Suomus's Kauhava base. At the same time, her sister Takami was assigned to the 502nd Joint Fighter Wing and sent on the same carrier as Hikari.

Due to a Neuroi attack, Takami was gravely injured and unable to join the 502nd. Hikari was later disguised as Takami by Gundula Rall and incorporated into 502nd.

Personality
Hikari is a determined and good-hearted individual who wants to prove herself to her team. She is slightly clumsy, especially when it comes to flying her striker unit, and is impulsive. She feels like she is in her sister's shadow, but also wants to prove to everyone that she has what it takes to be a witch.

She is also extremely optimistic, and tries to cheer people up when they're down, and Hikari is easily impressed by her colleagues. She is a quick thinker, and sometimes has creative solutions to solving problems.

As a consequence of her desire to follow in her sister's footsteps, to come out of her big sister's shadow and wishing to prove she is a capable witch; Hikari tends to be very stubborn and on occasion fool-hearty, sometimes to the point of being a bit bullheaded. Whenever she is told she can't do something or if given critique about her ability and capability's or lack thereof she does tend to feel challenged and in a bid to prove herself pushes herself hard, sometimes to the point of exceeding and even overextending her limits, at times to her detriment. That said, at times it's thanks to that stubborn pluck that she is able to turn the tables into her favor and that of her comrades, or even snatching victory from defeat or otherwise dubious odds.

(Source: World Witches Series Wiki)