Don't Look Back, easily. XD
My faith in this era had wavered significantly when S/S and YW../Ballad were released. Such disappointments after the back to back awesomeness from the previous era that were Mirrorcle World, Green/Days, and Rule/Sparkle.
Once SNSD and Namie's new stuff started coming out, I really believed that Ayu might be the only artist I like to come out with a disappointing release this year. Microphone and SLT restored my faith a little but DLB nearly had me weeping. I couldn't believe how relieved I was that my Ayu had actually took a risk again and made something, dare I say? Unique... and good.