Excuse me, in the Japanese cartoon "Chess Soul", Shindou Hikaru's clothes are always printed with "5". Is there any exact meaning?

Many clothes in Shindou Hikaru have the word "5" on them, and some clothes have a circle on the outside. Let's talk about this first-the word "5" is similar to the English letter "G" in reverse, and the circle is equivalent to "O", which together means "GO". Shindou Hikaru said, "What's the matter with Go?"? Translated into Chinese is "What is Go?" Obviously, the only thing that can be translated into Go here is "GO". In addition, the pronunciation of "5" in Japanese is similar to "Go".

In addition, Zuo Wei disappeared on May 5th of the new calendar, and Xiu Ce's birthday was on May 5th of the lunar calendar.