[Diana]

I also love it when she puts feelings in her songs.. Yeah, sometimes it is acting like on Arena Tours with Shuya.. It was cool at first but it started to annoy me :/ The same fake thing all over again!
But when she sings her ballads and cries I so love to see that she gets all emotional..that I also cry (it's not too hard to make me cry lol). When she was singing untitled ~for her~, MY ALL etc, I doubt she was faking. It was nice to see her, sharing her feelings with everyone... Showing her weak side. Sometimes I don't know if she's crying from happiness or from sadness.
I love Ayu because she sings with her heart! She puts her emotions/feelings in her songs, both melody and lyrics!

EDIT: Yeah.. forgot one thing.. I think her vocals are great! Well, they've been better of course, but still good. She tries very hard and has skills. She really sings because she loves it! Not just "to sing a song and get over with it"