Why do all demon slayers have crows but Zenitsu has a sparrow? All demon slayers were given crows after the final selection for communication but Zenitsu was given a sparrow which apparently can't even talk. Why is this so?
It was never explained (though the manga is over already), but some people say it's a sparrow because of its symbol. Sparrows are often related to peace and happiness, away from worries and fear. It is a good sign to send to someone like Zenitsu, who is always scared and anxious.