User blog comment:Mamerge/What if Natsu is END? And Silver is Future Gray?/@comment-153.104.183.229-20140411172807/@comment-7418318-20140411173713

Ur or Ul doesn't really matter, since there is no correct or wrong way to decide which it is.

In japanese, both r and l (or rather the syllables that contain them) are the same and how it's pronounced depends partly on the surrounding letters and partly on dialect.

If you say "sayonala" instead of "sayonara" to Japanese people, I doubt anyone would even bat an eye-lash at you.