Yihuan not only attracts a large number of players with its gameplay, but the game's background story also wins the affection of many plot and world-setting enthusiasts with its unique worldview and suspenseful main storyline. So, what is the background story of Yihuan? Today, I will bring you an overview of the Yihuan background story, and together we will step into this vast and perilous surreal world.

The story takes place in the high-tech metropolis of Hitero City in the near future, where human civilization has developed rapidly. However, the other side of the city is being eroded by a mysterious phenomenon known as "Anomalies." These so-called "Anomalies" are supernatural existences that cannot be fully explained by science; they could be distorted spaces, cyclic times, or monsters and places born from obsessions. These anomalies often stem from repressed human emotions, unresolved obsessions, or collectively forgotten memories. They quietly grow in the corners of the city, sometimes hidden, sometimes sweeping through, causing disasters.

To maintain order, humans have established a specialized official institution—the Anomaly Administration Bureau—to monitor, assess, and handle various anomalies. They have created a quantification system for anomalies called the "Witheimer Value," which categorizes anomalies based on their danger level and dispatches special agents to respond. However, the complexity and instability of anomalies far exceed human control, and many dangerous incidents still frequently occur, especially after the New Silian disaster, making Hitero City increasingly unstable.

The protagonist, codenamed "Anomaly Zero," or simply "Zero," is the key figure in this storm. She lost all her memories during the New Silian disaster but gained a special ability that cannot be detected. Since her ability does not fit into any management system's definition, she is considered an "unclassifiable anomaly," yet this also grants her the freedom to act outside the rules. Driven by both survival and the pursuit of truth, Zero joins a nearly bankrupt but mysterious antique shop—Ebon—and begins to take on various private commissions as a "folk anomaly hunter," embarking on a journey to recover her memories and uncover the city's secrets.

As the story progresses, players will follow Zero's footsteps, delving deep into the investigation of bizarre anomaly events in Hitero City, from eerie neighborhood distortions and the overlap of dreams and reality, to space mutations and consciousness distortions derived from intense obsessions. Behind every anomaly lies a forgotten life, an unfinished emotion, or even a hidden historical truth. Zero must not only confront the anomalies but also face the numerous obstacles within the Anomaly Administration Bureau and the ultimate mystery deeply rooted in the city, closely tied to her own fate.

Yihuan is not just a game that balances action and strategy; it is also a gaming journey that delves into human emotions and the city's consciousness. Players will navigate through a world interwoven with reality and illusion from Zero's perspective, uncovering forgotten memories and unraveling twisted truths. That's all for the introduction to the Yihuan background story.