Kimi no Katana ga Oreru made: Tsukimiya Matsuri no Koi Gataki

The series is set during the Bakumatsu period, the closing years of the Tokugawa shogunate. The story centers on Matsuri Tsukimiya, a beautiful girl who catches everyone's eye. Everyone except her crush, Yonosuke Tsukimiya, her childhood friend, and who she grew up with as family. Yonosuke burns with one purpose: to avenge the death of his former lover by killing the general responsible for her death. Matsuri is desperte to turn Yonosuke away from wasting his life on vengeance, and to that end, she decides to try and fill Yonosuke's head with only thoughts of her, until she can become Yonosuke's reason for living.

(Source: ANN)

Included one-shot:
Volume 4: Okami to Monokaki