There is an urban legend that a child who has taken part in the chigo parade three times will be happy, which is particularly believed in Aichi Prefecture (it is restricted to girls in Aichi Prefecture).
尚、稚児行列に3回出ると幸福になれる、という都市伝説もあり、特に愛知県で根強いらしい（愛知県内では少女に限る）。