Koinobori is decorated for Tango no sekku (=Boys Festival) on May 5th. Tango no sekku is called Children's day, we pray for children’s happiness and health. Koinobori is a simbol of strength and success, and it also has meanig of protecting children from misfortune and evils. * We have Girls Festival (Momo no sekku) on March 3rd, don't worry: