One of my favorite events in May is Koinobori. When people all around Japan hang colorful fish-shaped windsocks outside their windows, balconies, and shop fronts to celebrate Tango no sekku also known as “Children’s Day” on the 5th of May. But why are people doing this? What is the history behind those beautiful “carp streamers” floating in the wind?

A Little History

“Children’s Day” was not always all-inclusive. Because this we know for sure, it used to be called “Boy’s Day”. And I guess, the same as in many other cultures, historically boys would have been celebrated as name-keepers and put in charge to be set out for bigger things.

As for when it all started this is a little bit unclear (as so often with that kind of events). However, it is said to have been celebrated for over 700 years. And yes its origin is equally mysterious, with rumors saying that it all started as a celebration for a samurai warrior, hence the name: Boy’s Day.

Koinobori: Carp-streamers floating in the wind
Source: https://www.aliexpress.com/item/32792806090.html

But Why The Shape Of A Carp?

Well, there are two rival theories. The first is that the koi or carp became the symbol of “Boy’s Day” because of its characteristic of being the most spirited fish, full of energy, holding so much strength it could swim upstream and even conquer the strongest currents and cascades with ease, sternly focused on its goal. Because of this ability to overcome obstacles it became a synonym for courage and success. These being highly desired traits for boys in the old days, families placed the Koinobori outside their houses. In honor of their sons and in the hope these traits would manifest in their little ones.

The 2nd theory, which I do love more I must say, brings us back to mythical Japan, full of legends and stories. Taking us back to the Han Dynasty in China and to an ancient tale of a school of golden koi swimming up the Yellow River. Struggling for one hundred years and being teased by demons one of them finally reached the top of the stream and was ultimately rewarded. As a god was watching and turned it into a majestic golden dragon, an image of pure power and strength.

So no matter which of the two stories you prefer, this graceful fish has become a symbol of strength and courage and is the reason why these days on now “Children’s Day” we see them floating in the wind around homes and businesses alike.

When To Spot The Koinobori

Children’s Day marks the end of Golden week every year on the 5th of May, but this is not just a one day show. It has become a beloved tradition, with many people already hanging the carp- streamers out from mid-April. They also often stay on for a while after. With many popular places in Japan displaying beautiful exhibits of them.

You will see them literally everywhere, but one of my favorite places would be at Tokyo Tower. Where the whole square in front of it is turned into a stream of carps swimming to reach the top. It is a real highlight and with the mild weather around this time of the year, the perfect place to check out. And just on the off-chance that there are some showers when you are in Tokyo, I recommend to check out Nakano Broadway for an amazing indoor display under their covered market.

However, and this is the best part, you will also find them in many shopping malls, especially in more local areas. Which makes this the perfect reason to explore some off-the-beaten-path places. So just go for a wander and see where it takes you.

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