Crimson Karma is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Kasiya Del Roman is a soldier crafted to become an assassin. She lost her human emotions long ago and lived her life as a simple tool, just to be thrown away in her final moments. She couldn’t even die a proper death as she opened her eyes to a battlefield of a different world. Will she live the same life she did in her original world