Rename Raibaru!

Here's a bit of a gag contest. I don't know if there's a prize involved, but I'll appreciate any input on this subject.

In Ashes of War, one of the two main characters is a war hero known as Raibaru. If you know much about Japanese syllables, you might have already guessed that this character is just Rival pronounced in Japanese style. I'm sick of this name, but I can't think of another.

I have a few rules for name suggestions. 1. All suggestions should have a Asian element to the name, just because I've got to make it fit with everything else in the story. 2. All suggestions should fit with the character's role and personality. For example, Raibaru is the rival of the other main character, Rakkan.

Here's a description of Raibaru as a character. Thank you for your support.

RAIBARU--hero of Uyoku and possible successor to the role of Overmaster. He is bound by a code of honor, making him keen and logical in battle. Once, he was a student of history and spirituality. Eventually, many people will look to him as a guide to freedom and salvation.