Nyaako Hayakawa is the beloved pet cat of Aki Hayakawa in the anime and manga series Chainsaw Man. Nyaako is a small, white cat with a gentle demeanor, serving as a source of comfort and emotional support for Aki. Though Nyaako does not directly impact the central plot, the cat symbolizes Aki's softer side and his desire for normalcy amidst the chaos of his life as a Devil Hunter. Nyaako's presence highlights Aki's humanity and vulnerability in the story.