"Manzoku" suru made Kanojo!

A young man finds himself unable to achieve satisfaction in his relationship with his girlfriend, despite her efforts. He struggles with a sense of emptiness and frustration that he cannot explain. One day, he discovers a mysterious book that promises to grant any wish, and he decides to use it to finally feel complete. The book's power leads him down a dark path, forcing him to confront the true nature of his desires and the consequences of seeking fulfillment at any cost.