Chikane Himemiya is the reincarnated Lunar Priestess, eternally destined to confront the ancient deity Orochi alongside her counterpart, the Solar Priestess Himeko Kurusugawa. Her saga spans the original manga, the anime adaptation, and spin-offs including *Shattered Angels* and *Zettai Shoujo Seiiki Amnesian*.

She possesses long dark blue hair (rendered as dark turquoise in the manga), light blue eyes, and bears a distinctive crescent moon symbol on her back. Chikane embodies poise and elegance, achieving excellence both academically and athletically at Ototachibana Academy. Her accomplished skills encompass mastery of kyūdō, piano, tennis, and horseback riding. Though widely admired by peers who find her unapproachable, she shares a profound bond with Himeko, the sole person who interacts with her without idolization.

Outwardly projecting perfection, Chikane grapples with intense inner conflict. Initially portrayed as noble and selfless—protecting Himeko from physical harm and school bullies—she harbors deep romantic feelings for her. This love ignites jealousy toward Himeko’s childhood friend, Sōma Ōgami, and evolves into possessiveness. Her turmoil intensifies upon learning of their shared past lives, including the revelation that she killed Himeko in a previous incarnation.

As the Lunar Priestess, Chikane wields ceremonial hakama attire and combat gear, employing a sword and bow-and-arrow to target Orochi weak points. She later gains control of the Orochi mecha Yokusemi no Mizuchi after joining the group as its Eighth Head. This apparent betrayal culminates in her assaulting Himeko and systematically eliminating other Orochi members. These actions mask a sacrificial gambit: by provoking Himeko’s hatred, she ensures Himeko survives the ritual to summon Ame no Murakumo, which requires one priestess to die by the other’s hand. Chikane orchestrates her own death to spare Himeko this fate.

The cycle of reincarnation defines Chikane across narratives. In the anime’s conclusion, her sacrifice erases her from the world’s memory, but she later reincarnates into the same timeline to reunite with Himeko. The manga depicts her rebirth as Himeko’s twin sister, subtly preserving their emotional bond. Spin-offs further explore their reunions in lifetimes free from the Orochi threat, underscoring their eternal connection.

Her relationship with Himeko remains central, evolving from secret friendship to mutual romantic acknowledgment. Sōma Ōgami, mistakenly perceived by classmates as her romantic partner, shares a respectful but platonic dynamic with her. Among Orochi members, she earns Tsubasa’s grudging respect after battling him to a draw.

The name "Chikane" combines "thousand," "song/poetry," and "sound," while "Himemiya" translates to "princess temple," reflecting her noble lineage.