Don't you guys have problem singing this?

The vowel E, or rather, I ( い ) in japanese.

Its not so bad when it's tone/pitch is around your chest voice. But when singing chorus with a lot of words like: nai, sekai, etc, doesn't it becomes a problem for you?

Feel free to share away some tips Because I'm having problem with it too XD!

I think I don't, hahaha @A@
There are different ways on the dividing of the syllables, like say, "se-kai" and "se-ka-i", so maybe you can narrow this down?
What specific problem are you having with it?

Hmm, its like I cant sing [i] powerfully. Singing it with power will make it unstable and break easily or make the next word i sing unstable. So it's kind of hard to maintain it when singing it during the chorus of a song.

Can you perhaps provide an audio sample so we can hear what exactly you're having trouble with? owo

Im too shy currently but I did audition for yowamushi montblanc no. 118.

That was about.. 6 mths ago. I'm not sure whether it has changed but throughout the 6 mths I'm still active in singing vocaloid songs.

Hmmm... well, you do pretty well until you get to the higher notes. You start getting flat then. Not exactly sure if it has anything to do with your vowels though.

The basic rule for singing vowels is to keep your mouth round at all times. Pretend there's a big fat orange in it
Make sure your mouth doesn't move too much in the horizontal direction like when you normally speak and say "eeee". Your mouth should be opening vertically even when singing "eeee". It'll take a bit of practice but it is possible. Remember to keep your tongue down at all times.
I hope this helps you a little bit. owo

If you're still having problems with it, the it might be some other technique you're doing wrong.

Thanks I think I get the picture ^_^ I'll practice starting tomorrow