01. Her uniqueness -- She is unlike any other artist I've seen. Her concerts are so elaborate; her style is always different; her music videos aren't just her dancing in front of men; and, of course, her lyrics are so -- I don't know -- beautiful? Inspirational? All of the above?
02. Her sincerity and acceptance to fame -- She's neither humble nor a gloater about the things she does. She's completely in the middle, she accepts her fame with smiles and honest "thank you's." As rikku said, "...the fact that she shows us she's a human just like the rest of us."
03. Her (mental) strength -- Ayu has gone through so many hard things in her life. First, her close and dear grandmother passed away on the recording day of her debut single. Second, her father walked out on her life. And all in one year, she lost her hearing, the love of her life, and a close friend. I'm not ashamed to say that I am proud of her! So many people would've given up by now, but she keeps on walking forward.
04. Her positive and hard-working attitude -- Some of this could go with her strength as I've mentioned above, but I admire the way she takes matters into her own hand, what with the tours and videos she creates.
05. Her personality -- She always seems so happy, high in spirits, determined, and sweet. (Honestly, I couldn't think of anything else; I feel like this fifth reason pretty much falls into all the other four. ^^)