Oh! You put the lyrics in the video, awesome~!
It's nice to see team-effort come out like this, you did a good job with the video.

Oh why, hello there. From looking at your Devi-page, I can probably take a good guess who you friend is and that you have some stick-stick as to getting the UTAU program. Or UTAU-synth in your case~

Ah, sure thing, I've done this for a bunch of people before and I can try to help you out as best I can! ( ' v');

So, assuming that you already have UTAU, I don't need to tell you how to get it.

As for the voicebank, first you will need a recording program: something like Audacity, Oromeo (I think), or something else like that.

Then what you will need to do after learning how the program works recording is to make individual WAV files for each Japanese syllable. These can either be written in Hiragana or Romaji as the file name. And remember to keep the files under a folder by the name of your UTAUloid~!

You can find the syllables needed to be recorded on Wikipedia [link] . Though some needed sounds aren't there like fa, fe, fi, fo, ye, etc. That may take some knowledge on how to pronounce each sound too.

The next part after that would be OTO.ini, which will be after you Register your Voicebank on the UTAU program. Of course, that will be after you make the voicebank.

In the meantime, I think that's all I got to say. But if anything still seems unclear or if you have any other questions, feel free to ask! I will try to answer them as best I can.

(Sorry for le-long-explain-zee~)

Hm, he sounds interesting when he sings. I little blurred, but that's no matter. I would like to point out some of his consonant sounds though, they may be a little prolonged-or-slurred. Otoing may help to straighten that, but otherwise this is good for a first cover~!