Talk:MAYU/@comment-34440083-20190410231036/@comment-53539-20190411085620

Not the first example, Nekomura Iroha has the same thing. In Iroha's case she existed before being a Vocaloid, thus the birthday is different. SeeU's birthday is also the day she was announced (I think it was her) which is pretty common to happen in Asia. Vocaloid itself celebrates its own birthday on the 26th of Feb, the day it was announced and not Jan 15th, the day of the first release of VOCALOID.

I half suspect Mayu's date of birth is a typical play on words with "May" and "U". Often the Japanese play around with the name and produce a 2 date birthday, I've seen this a lot in the One Piece manga. I don't really understand how to convert Japanese letters into the number system, so I'm not going to really explain this too deeply. But certain sounds correspond with certain numbers, and its how many characters in One Piece got their birthdays.