In the wake of a chilling bear attack, Kazuki Mori's life takes a bewildering turn. Instead of meeting his demise, he awakens in a world that defies explanation. His senses are heightened to a supernatural level, granting him an uncanny awareness of his surroundings. But why? The answer eludes him, shrouded in the enigma of this new reality.

Guided by the memories of his past, Kazuki embarks on an extraordinary expedition. The landscapes he traverses are breathtaking, teeming with life both familiar and foreign. As he navigates this uncharted wilderness, he discovers unique creatures with traits that defy earthly norms, each a testament to the mysteries that lie hidden in this realm.

Yet, for all the wonders he uncovers, questions multiply. Will he ever understand the source of his heightened senses? Is he truly alone in this realm, or is there a chance of encountering others who have undergone similar transformations? As Kazuki delves deeper into the heart of this unexplored world, he grapples with the tantalizing allure of the unknown, driven by a determination to unravel the secrets that hold the key to his existence.