The Night's Dreamer manga, written by Tsutomu Nihei, was canceled due to a combination of factors. The primary reason for the cancellation was the author's decision to focus on other projects. Nihei is known for his involvement in various high-profile manga series, such as "Blame!" and "Gantz," which have garnered significant attention and commercial success. Additionally, the manga faced challenges in terms of serialization and publisher support, which contributed to its premature end.

The decision to cancel "The Night's Dreamer" was influenced by several factors. Firstly, Nihei's busy schedule and his commitment to other projects played a significant role. According to a statement from the author, he wanted to ensure that he could dedicate his time and energy to the manga series that were already in progress. This decision was further supported by the fact that "The Night's Dreamer" was serialized in the monthly manga magazine "Weekly Young Jump," which was known for its high turnover rate and limited serialization space. The competition for serialization slots and the pressure to produce consistent content may have also contributed to the manga's cancellation.

Data from the manga industry indicates that serialization challenges are a common issue for manga creators. According to a report by the Japan Manga Professional Association, the average serialization period for a manga series is approximately 2.5 years. However, many manga series face cancellations before reaching this average due to various reasons, including author workload, publisher support, and market demand. In the case of "The Night's Dreamer," the combination of these factors led to its cancellation after just 11 volumes.

Furthermore, the manga's cancellation was also influenced by the changing landscape of the manga industry. With the rise of digital manga and online platforms, traditional print magazines have faced increased competition. This shift has made it more challenging for manga creators to secure serialization slots and maintain a consistent readership. The Night's Dreamer's cancellation is a testament to the evolving dynamics within the manga industry, where creators must navigate a complex landscape to ensure the success of their works.