Kodomo-no-hi falls on May 5, called "Tango-no-sekku", Boys' festival. In Japan, we have various customs on the day. We hang out carp streamers (Koinobori) or decorate the Boys' May Festival dolls to pray that boys in the house will live their lives strongly as well as to drive out an evil spirit. On this day, we take a bath with the leaves of the sweet flag, which is also believed to drive out noxious vapors from the body. The children eat rice cakes wrapped in oak leaves (Kashiwa-mochi).