Hibiki Sakata is a supporting character from the anime Kumamiko - Girl meets Bear. She is a twenty-four-year-old woman who hails from the same rural Kumade Village as the protagonist, Machi Amayadori. Known in the community for being fearless, even around intimidating men or bears, Hibiki is a childhood friend of Machi's cousin, Yoshio, and she has harbored a longstanding, albeit unacknowledged, crush on him.

Hibiki has a striking appearance that initially leads others to form the wrong impression about her. She has long blonde hair and matching eyes, and she accessorizes her look with silver hoop earrings and dog tags around her neck. Her preferred style of dress is sporty and casual, often consisting of leisurewear or a Sukajan jacket. She is also known to smoke and ride a motorcycle.

Her personality is a study in contrasts. When first encountered, she comes across as a tough, aggressive punk and a delinquent who is quick to resort to physical reactions when angered. Machi initially mistakes her for a violent individual based on her demeanor. However, this harsh exterior is consistently shown to be a mask for her true nature. Hibiki is actually quite shy and easily flustered, particularly when her feelings for Yoshio are involved. She is a poor liar, and her wholesome intentions are frequently misunderstood, sometimes even leading to her being wrongly accused of crimes. Beneath her tough facade lies a secret soft side, allowing her to act as a caring "cool big sister" figure to those she warms up to.

Hibiki's primary role in the story is that of an outsider who bridges the gap between the secluded village and the modern city. Her introduction in the fourth episode adds a new dynamic, as she is more worldly and street-smart than the other characters. This is best illustrated when she takes Machi to a department store called Shimomura to help her shop for a new miko outfit. During this trip, Hibiki acts as a guide to urban life, contrasting her own modern sensibility with Machi's deep, trance-like knowledge of the store's high-end brands, which amuses and confounds her. Her relationship with Machi evolves from an awkward first encounter to a supportive friendship, while her connection to Yoshio remains a central, unspoken motivation for much of her behavior, as she works to hide her nervousness around him. Hibiki does not possess any supernatural abilities, but her self-assuredness, experience with the outside world, and fierce loyalty define her role in the series.