Board Thread:Theories and Speculation/@comment-27725840-20170731214952/@comment-3279282-20170803205524

Nope, the only one-letter-sign there is, aside of aeiou, is n. So no "r", as in "Urashirmataru".

However, I think what OP wanted to say was "Urashima Taro", one of the many folklore characters in Japan. Going by the Naruto naming style, his name would be "Urashimashiki", then.