Red is the color for "Kanreki", what the Japanese call turning 60.
I found this t-shirt in Sugamo at Maruji, they sell everything red…underwear, these Kanreki t-shirts and the formal Kanreki gear.
Gift wrapping.
Gift wrapping.
If you are interested in some of the other types of celebratory birthdays in Japan, please look here.
Wishing Satoshi a happy and healthy birthday!