MIRAGE OF BLAZE: REBELS OF THE RIVER EDGE

Takaya was sent to Kyoto to investigate the re-awakening of Ikko sect and Araki Murashige, a member of the Ikko sect who deserted the clan.With the help of his vassal Haruie, Takaya is finally successful in tracing Araki who hunts down a 400-years-old mandala (Buddhist artifact for meditating) that was made of the hair of the deceased Araki clansmen. Unfortunately, by the time they meet, Haruie recognizes Araki as Shintarou, her lover in her past-life. Takaya orders her to eliminate Araki, who is a threat, but will she be able to do it. Furthermore Takaya finally meets Naoe... (Source: Anime News Network) — Description from AniList community (anilist.co).