Haruki Nao is a Japanese who lives in the village named Shimokitazawa, he studied at high school in Tokyo and grew up without his father and mother. he was educated by his grandmother from a very young age, but at seventeen he received a diploma from his high school in Japan allowing him to go to Fordham University in New York in the United States. However, his life is in danger of changing after he visits the natural history museum with some friends where he feels fascinated by a manuscript in Japanese letters that he will make the mistake of reading in full.