02/05/2026
Happy Golden Week! While this period actually has four holidays, the most recognized one is Children’s Day (Kodomo no Hi/こどもの日) on May 5th.
While today we celebrate Children’s Day for all kids, many of the symbols associated with this holiday draw on the holiday’s historic origins as Tango no Sekku, or Boy’s Day, one of the five cultural festival of the imperial court.
Here are some things to look out for:
🎏 Carp streamers (koinobori)
Carp streamers, or koinobori, flutter all across Japan in early May. The carp represents a fish in Chinese mythology that swam upstream and turned into a dragon. Samurai families hoped their male children would show the same resilience and fortitude. Today, the flags are flown for children of both sexes, in hopes they will grow up to be healthy and strong.
🍂 Kashiwa Mochi
It’s common to see mochi (pounded rice) filled with bean paste or white miso and wrapped in oak leaves as a treat served on and around Children’s Day. The oak leaf symbolizes prosperity and the continuation of family lines. Be sure not to eat the leaf!
🟣 Irises and sweet flag
These plants are also a symbol of Tango no Sekku. The word for both sweet flag and iris (shōbu) is also the same pronunciation as “warlike spirit” or “duel” (just with different kanji). These two plants’ leaves also happen to be shaped like swords. A boy bathing in an iris bath on May 5th would hopefully be imbued with the strength and spirit of a samurai. While sweet flag was the original plant associated with the holiday, it doesn’t have a pretty flower. Over time, given that the bloom period of the Japanese iris corresponds with the timing of Children’s Day, the iris became the more popular motif.
⚔️ Kabuto (samurai helmets)
Families with boys will often set out a samurai helmet, known as a kabuto, or even an entire suit of armor in the alcove of their home to celebrate the holiday. As with the other symbols, the hope is for their boys to grow up with the strength of a warrior. Did you know that the samurai kabuto was allegedly the inspiration for Darth Vader’s helmet?