Song 4 u always sounded amazing.
Missing had potential. It sounds really good.

Melody sounds like the usual Ayu ballad, with the acoustic feel imo. I like her generic ballads, so I don't really mind it. It definitely sounds like the least memorable song though.
For a mini-album, it doesn't sound so bad. The You & Me remixes will be a weird addition, but whatevs. And it definitely sounds like a maxi-single to me (only 3 new songs), but if avex calls it a mini-album... it is what it is I guess