May 5th is “Children’s day”, and it is mainly “Boys’ festival”. Its festival is to pray for boys’ success and health, and on this day people hang out “Koinobori” (Carp streamers).
Carp are symbol of the strength or patience to accomplish their dreams, because the fish are believed to be able to climbing up stream against rapid currents.
On this day, we take a bath with the sweet flag’s leaves called Shoubu in Japanese. It is believed to drive noxious vapors away from the body.