In Tokyo in the near future, NOUNAI Senri joins a large pharmaceutical company, RUOWA, to cure his sister's intractable disease, but he suffers from a side effect of the company's RUOWA Metal, a drug that turns muscle into metal and weakens his body. On the orders of the company, which does not want this side effect to be made public, he is assigned to kill people who are suffering from the same side effect.
"RUOWA01" is on sale.