What's wrong with the colour of the lipstick?????? All of you know that Ayu is the leader in fashion and maybe pink is the 'in' colour for this season (just look at her recent photo shoots). PLUS, it's more appealing to girls, who are ayu's main target listeners. I can think of at least 10 things ayu could've done to look ****ty, for example having guys on her bed (who would've thought of that

) or pose nude like in RAINBOW.
About the key, I don't think it was a key to her diary...if you look at the regular pressing cover, the key actually points to her chest, presumably pointing to her heart. So I took it meant that this is a personal album and it's a key to ayu's heart. It sounds a bit cheesy but that's what I think it means. =p