NOUNAI Senri's sister Mari has an incurable disease and cannot walk. In an attempt to cure his own sister, he joins the big pharmaceutical company RUOWA, where he encounters an oral drug that turns muscles into metal and causes him to suffer from side effects. NOUNAI Senri gets to work killing people who suffer from the same side effects. he finds out that his sister Mari is not at the wedding and goes to see her. she is crying in her room.