Keisuke Shinohara

Blackfox

Keisuke Shinohara, Kazuya Nomura

Ayaka Nanase, Haruka Tomatsu

Rikka is a ninja descendant. Her grandfather Hyoe is the last chief of their ninja clan and her father is a cyborg researcher. Both are killed when a weapons' company raids his lab to use his research. Rikka sets out to avenge their deaths.