Kunoichi Asuka くのいち飛鳥～吉原遊郭奇談～

Some dead bodies are found in Yoshiwara, a red-light district. The victims are a son of a high official and his surroundings. Asuka, a Kunoichi (female ninja), is sent to Yoshiwara to investigate the case. As she investigates it, the situation goes chaotic. She is also attacked by another Kunoichi and gets involved in a different case....