In a world where reality and fantasy intertwine in unexpected ways, we follow a young man named Kōji, a teenager struggling with the meaning of his existence in a society that seems directionless. Kōji is marked by the recent loss of his mother, leaving him engulfed in deep uncertainty about his future and purpose. As he navigates through his daily life, he will face moral dilemmas and challenges that will test his character and values.
One day, unexpectedly, he encounters an enigmatic old man who presents him with an ancient book that speaks about life and the decisions each of us must make. Through its pages, Kōji is transported to a parallel world, where the ideas of friendship, love, and sacrifice come to life in a vivid and moving way. Each encounter in this new realm reveals valuable lessons about respect, empathy, and the pursuit of happiness.
As Kōji faces fantastic dangers and mythical creatures, he also confronts his own fears and insecurities. The journey will teach him that, although each path is unique, we all share the same quest for meaning and connection in a chaotic world. In the end, he will have to decide whether to return to his previous life or to dare to forge his own path in search of the true meaning of living.