I was disappointed with most releases this year tbh, tho personally I have to give kudos to Ayu (whom I normally despise), because Colours was a solid record and made me look into her past efforts once more. Kuu delivered, as usual. No comment on the others. Overall, it's been a sloppy year for J-pop artistically and sales wise. Here's to hope 2015 will be greatly different with the returns of Queens such as Crystal Kay, Utada Hikaru and Akina Nakamori. 
