Vicissitude: Yang Side (Lost Earth Series)

For ten years, Showgun assassin Jun Mei Akiyama thought that she could finally have a normal life in Tokaido, but when her mentor gets shot, she gets blackmailed, and she discovers that she is the reincarnation of Amaterasu, Jun finds herself being forced to confront the fact that she isn't the assassin anymore, but the target of the very organization that tore her childhood apart.