May 5 is 'tango-no-sekku'(formerly the Boys' Festival,now Children's Day).
People set up 'Koinobori' at the Children's Day with the wish that their boys will grow up strong and healthy.
Koinobori is a big carp-shaped streamer made of paper or cloth.
It is believed that carp are vigorous enough to swim up even waterfalls.
People display also samurai dolls at home.
