Well, a sign for snow cones, at least. The kanji (Chinese character used in Japanese) means “ice”, and flags like this one (birds optional) are hung by stores to advertise the sweet, syruped ice creations available inside.
The Japanese love snow cones. Once the mercury passes 31C or 32C, ice cream stops being an option; it’s gotta be kakigori. Ice cream just doesn’t cool the body in quite the same way.
Of course, now it’s fall, so ice cream is back on the menu.