In Japanese folklore, the spirit that symbolizes purity and innocence is the kawa-no-kami, or river deity. These spirits are believed to embody the essence of rivers and streams, representing the clear and pure aspects of nature. They are, at times, seen as protectors of water sources, reminding people of the importance of purification and ritual cleanliness. This reverence for water spirits reflects a deeper connection between people and their environment, emphasizing harmony and respect for the elements that sustain life in Japanese culture.