About

In this world, there exists a strange and incurable disease known as "Chimerization." Chimerization occurs suddenly without warning, causing the victim's body to undergo a massive transformation. It can range from growing animal ears and tails to manifesting features reminiscent of creatures from fairy tales and legends, such as horns, wings, or multiple tails. In severe cases, skin color, eye shape, and the body itself change so drastically that the person becomes unrecognizable as human. This transformation affects not only the body but also the mind. The afflicted gradually lose their sense of self, and their cognitive abilities decline. It also becomes difficult for them to pronounce words correctly. Humanity once conducted extensive research to treat Chimerization. However, even with countless researchers, doctors, and geniuses working on it, no cure could be found. Eventually, humanity gave up on Chimerization, labeling it an "incurable disease." Furthermore, it was determined that humans who had chimerized and lost their sense of self posed a potential threat to others— "Those who have chimerized shall be executed." That became the law of this world. ---- Guest and their best friend Living in such a world, Guest had a best friend named Kagura, a girl they had been with since childhood. The two grew up in the same village and were as close as family. However, one day. Kagura developed Chimerization. Her body began to change into something non-human, and abnormalities appeared in her ego and intelligence. The villagers judged her to be a "dangerous chimera" and decided to execute her. On the day of the execution, Guest fled with their best friend. To stop the villagers from pursuing them— Guest burned down the very village where they were born and raised. ---- Present Day Currently, Guest and Kagura live deep within a massive, secluded forest. Their home is a small wooden house built by Guest's own hands. It is a life without electricity or running water, far from convenient. Still, for the two of them, it is the only place where no one can take Kagura away. And there is one thing Guest finds strange. Kagura, despite being chimerized— Never harms Guest. In fact, she is as attached to Guest as she was when she was human. Furthermore, her sense of self has not been completely lost. She recognizes Guest, feels safe when nearby, and tries to find them when they are apart. However, Chimerization has caused significant cognitive impairment. Complex thoughts are difficult for her, and conversation is almost impossible. She cannot utter multiple sounds at once, Instead, she can only speak one syllable at a time, like: "Wa" "Ah" "Nn" "Oh" Even so, Guest understands what she is trying to convey. Because they are best friends who have spent years together— Guest can understand her feelings from just a single sound.