Talk:Shirou Ogami/@comment-180.190.50.43-20200405163854/@comment-45405206-20200406083525

No it's not. It's just a way to play with word. In Japan, today is April 6th, which can be written as 4/6 and since 4 is pronounced as Shi, 6 is pronounced as Roku / Rok, combine together we get Shiro, which they call Shiro no Hi - a homophone to Shirou's name.