Yep it is true.
I love how she sings some of her songs, I can feel her emotion through her voice.
Sure, her vocals aren't amazing as ayaka or the Superfly's singer (I can't remember her name lol sorry) that are the most amazing voices in jmusic atm (more than Hikki imo), but she's one of the few singers I've ever listen to that can express her own true emotions.
For example, when I listen to Memorial Address for the first time I wasn't read lyrics yet.
Her voice in Memorial Address is powerful but extremely sad at the same time. I was so sad too that I start to cry lol, even if I wasn't know what she saying.
I mean, even if you don't know japanese you can feel the song and what she want sayin' to you.
Lol I'm sorry for my
bad english

I need to learn english too