Himeno is a sweet, shy little centaur girl. In her world, everyone seems to be a supernatural creature, and all her classmates have some kind of horns, wings, tails, halos, or other visible supernatural body part. Despite their supernatural elements, Himeno and her best friends, Nozomi and Kyouko, have a fun and mostly normal daily school life! (Source: MangaHelpers)

On a sunny afternoon in her Paris apartment, assassin-for-hire Mireille Bouquet receives a strange email from Kirika Yuumura, a young student from Japan, inviting her to make a pilgrimage to the past together. Initially thinking the email is nonsense, she changes her mind when it begins playing a song that she recognizes from her youth. Upon first meeting each other in person, the two are suddenly ambushed by gun-wielding men. While Mireille is capable of fending off the assault, she discovers that Kirika is quite adept in combat situations after she takes out several gunmen on her own. Despite her proficiency at killing, Kirika laments her inability to feel remorse for her victims. In addition, Kirika apparently has no memory of how she came to acquire the skills she possesses or even of her real identity. Sensing shared history between them, Mireille agrees to team up with Kirika, and together, they embark on a journey to uncover the mysteries of their pasts. Operating under the codename Noir, the duo's fragile alliance is tested as they begin accepting jobs, each one bringing them closer to the truth of who they really are.

As spring vacation comes to a close, a new school semester approaches. Deciding to make the most of the remaining holiday, Ayuko Uehara takes a stroll into her neighborhood and stops by a small cafe. However, her peaceful day is abruptly disturbed when a girl clumsily bumps into her. Left puzzled by the encounter, Ayaku is even more surprised when she meets them again as freshmen at the same high school she attends. Recognizing her from the store, the girls introduce themselves as Kanaka Amaya and Saki Iwasawa, and the three quickly become friends. As they go through their daily lives as high school girls, the trio's distinct personalities—Kanaka's happy-go-lucky attitude, Saki's tomboyish behavior, and Ayuko's easygoingness—are sure to make every mundane school day filled with silly and fun interactions.

Bundled with the limited edition 15th volume of the manga.