Ryuya Masunari

Third son Raizo is a good man, but when another organization targets his father and his family business, it awakens his violent side.

Hayaki, an aspiring medical office worker, wakes up naked in an oil drum. When she asked for help through a hole in front of her face, Yuhei, a man who looked like a researcher, came to her. He threatens her, saying, "This is a clinical trial and you need money to get out.