I'm a big fan of Nanairo Club dubs and always listen to you girls when I have the chance (even if I don't comment)! I enjoyed this dub, especially because I think that Sweets song are hard to sing and mix. I particulary really missed the "ah ah" in the beginning, especially since you had already recorded the "Uh". I think there's also a few other background sounds missing, which would make the dub sounds more complete. But overall, in terms of mixing, this is really well done. The group parts are all good, you girls have a really nice blending and I appreciate that you took the time to do some effects too.
The vocals needed a bit more of work though. Some girls didn't hit the right notes and I hear some flatness. But well... I probably wouldn't be able to hit those notes too.

BTW, you have a really nice voice Fuyumi and I love your harmonies. I want to steal you for a dub in the future. *.*