Today is Children's Day (こどもの日), also known as Tango no Sekku.
It is a day to respect the personalities of children, celebrate their happiness, and express gratitude to the mothers who raised them. Like the carp streamers swimming in the sky, I sincerely hope for a healthy and bright future for all.
I have previously written an article about the origins and traditional customs of this day. If you would like to learn more, I invite you to have a look.