Am I Cursed?

After Shirayuki died, Zen found it difficult to live without her. He started having nightmares and seeing illusions of his one and only love. Suddenly, a high school girl stumbled into his life. After meeting this mysterious girl, his nightmares and illusions gradually faded away. Soon, Zen finds that he has fallen in love once again and joins his lover's school. As Zen attends the school, the death of Shirayuki unfolds as the identity of her murderer comes into view. Will Zen find everlasting happiness once again with his new lover? Or is she?