Sengoku Youko

Tama, a katawara, has a unique bond with humans, and she's determined to protect them from harm. Her brother Jinka, on the other hand, harbors strong anti-human sentiments despite his own mixed heritage. The siblings team up with Shinsuke, a reluctant swordsman seeking to improve his skills, and together they stumble upon a sinister plot to transform humans into monsters through experimentation. This discovery sets them on a mission to defeat the masterminds behind the operation.