Beyond Black and White‧Colorful Years

If one day, a mysterious black envelope were to suddenly materialize on your desk, would you dare to open it? How much would you be willing to risk for the chance to have a wish fulfilled? Behind this enigmatic black envelope lies not only the protagonist's desires, but also the machinations of a mysterious organization, offering the opportunity to alter lives. The protagonist, Bicycle (also known as ""Shan Ju""), was once an ordinary middle school student. However, one fateful day, he discovered a mysterious black envelope on his desk after school. Driven by curiosity, he opened the envelope, unwittingly entangling himself in the selection competition orchestrated by the enigmatic organization S. From that moment onward, his life took a dramatic turn. Throughout this journey, Bicycle comes to realize that the unfolding events are intricately linked to his parents' disappearance and the changes occurring within his own body. In a bid to unravel these mysteries, he collaborates with another participant, the heroine Shirley, to navigate through a series of grueling challenges and solve the enigmatic puzzles before them. As the selection competition nears its conclusion and the truth looms on the horizon, Bicycle discovers that the seemingly straightforward Shirley harbors ulterior motives. Furthermore, these events are intertwined with his parents' research on neuroscience and memory. It becomes evident that the true black envelope has been hidden within our minds all along, and it's at this pivotal juncture that Bicycle's latent abilities awaken. ""Black Envelope"" is poised to form a sci-fi intellectual novel series alongside two other works, ""White Wonderland"" and ""Pink Girl"". In addition to the customary ""game"" elements, the intellectual depth of the series encompasses intricate ""puzzles"". Readers who relish mental challenges can follow the protagonist's trail of clues and endeavor to solve the puzzles alongside him, fostering an immersive and engaging experience.