Kirara Kurashina is a central character in the anime Labyrinth, serving as the best friend and polar opposite of the protagonist, Shiori Maezawa. She is described as a natural-born influencer, possessing a level of confidence and charisma that Shiori notably lacks. This trait is established from a young age; when the two friends created a social media video as children, it was Kirara who received the majority of the attention and likes.

In the story, Kirara is an active social media user with a substantial online platform. Her actions inadvertently set the main plot in motion. While the two are recording a video amidst shipping crates, Shiori falls and cracks her phone. Kirara then posts the footage of this embarrassing fall, which proceeds to go viral. This incident is directly linked to the subsequent events of the narrative, where Shiori becomes trapped in an alternate version of Yokohama, while a chaotic doppelganger takes over her real-world life.

Despite the imbalance in their online popularity, Kirara and Shiori share a genuine, caring friendship. Their bond is close enough that they continue to be friends and are noted to dance as one, suggesting a deep synchronicity and connection between them. No information is available regarding Kirara Kurashina's background beyond her relationship with Shiori, her specific motivations, her development throughout the story, or any notable abilities outside of her social media influence.