Well, I won't post any Celine Dion here I guess.
I first heard of UnSun when their single "Whispers" came out back in 2008. I actually really liked the song and wound up buying the CD. It had its moments with some nice lyrics here and there, and a few songs in addition to "Whispers" that were OK. I didn't mind Aya's voice or heavily accented English, but yes, the reality this is a mediocre band with a heavily commercialized sound, and it's basically a very poor example of Gothic metal.
Still, "Whispers" is catchy and once in a while I need a bit of lighter music if my mood leans that way, and the video is kind of cool.