Aiko Is a very nice light female vocal, however after using a UST, I noticed the oto had a little bit of clipping and this may just be on my side, but it made Utausynth crash (the voice didn't work at all when I downloaded it, I did editing now it just crashes) I also really like her design! I'd love to see where she goes from here.
and i never worked with utausymth my self so idk why it doze that