Tokyo in the Near Future.
NOUNAI Senri joins the big pharmaceutical company RUOWA to cure his sister's incurable disease, but his body becomes weak after he takes the company's RUOWA Metal, a drug that turns muscle into metal. In order to hide the side effects of the drug, he is ordered by the company to kill people who are suffering from the same side effects. The last user of the drug RUOWA Metal was Takayama Eiki, who is now missing. Will he be able to disclose this side effect to the world?
Senri and his friend DATE Shun try to tell the daughter of the last user, TAKAYAMA, about the side effects of RUOWA Metal, but Senri is caught by the director of AZUMA!