Utsubora

A novelist named Mizorogi becomes entangled in a mystery after a girl he once knew, Aki Fujino, dies under unclear conditions. Shortly after, a girl claiming to be Aki's twin sister, Sakura, appears. Her actual identity remains unknown. As details about Mizorogi's relationship with Aki emerge, he faces accusations of plagiarism. His editor and the police investigate both his connection to Aki and the circumstances of her death, leading Mizorogi into increasing turmoil.