One day, a beautiful woman named Aki Fujino died mysteriously. A woman, Sakura, who claims to be Aki's twin sister, appears in front of popular novelist Shun Mizorogi and turns out he had plagiarized Aki's novel "Utsubora". Sakura, who has the novel's manuscript, makes a proposal to Shun but this drives him into deep darkness. Meanwhile, detectives from Koharu Police Station are pursuing the truth behind Aki's death.
