Takumi's life was relatively normal and carefree, at least they didn't stop him from doing anything. He went to school like everyone else and spent his free time with his friends. One day, however, the cancer reached a critical stage and threatened to take the high school student's life. Once at the hospital, everyone involved realized that nothing could be done in the usual way to save Takumi's life, until a doctor injected him with a newly developed drug that, although not yet fully proven, Their safety was the only way to guarantee their survival. And indeed, the latter occurred, but also another side effect that would change Takumi's life from now on.