Lunar maiden, River-side Angel, and the Godlike Moment

Hidari Takanagi lives alone on the city outskirts, relying on relatives and welfare, spending her days talking to an imagined version of herself inside her mind. She wants to be an actor and a screenwriter — but her insistence on a self-satisfying stage means no one finds her. Meanwhile, a series of bizarre murders is dominating the news, targeting elderly people and women living alone. One night, Hidari finds a young man sitting alone in a park — impossibly beautiful, immediately warm, falling for her instantly, drawing her in. The two become friends. He never told Hidari, but he was the serial killer.