Tango No Sekku Festival (also called Shyoobu No Sekku) which is celebrated on 5th of May existed ever since the Nara period (8th century). On this day of seasons change in then Japan different rituals for protection from diseases and disasters were performed. In the past, when a boy was born in the samurai family, Tango No Sekku was celebrated as a tradition, and a flag with the family coat of arms was raised in the garden. In front of the entrance of the samurai home weapons, helmets and flags were arranged. A family of carps drifting in the sky expanse, which can be resembled to clear water, is a view frequently seen in Japan in May.