Natsumi is really quite nice, a simple character design along with a competent voice – though perhaps just a fraction too young-sounding – but hard to find in videos on-line, especially in solo performances.
I don't (yet) know how tightly defined the UTAUloids' characteristics are (I suspect not very!), but this is a Saboten model no less, and is actually quite pretty I think, singing a somewhat so-so song called Ne Ni Ge De Reset (no, I don't know what it means either).
Perhaps I'm just going soft in my old age, though, as I have recently started to suspect, but don't let that stop you enjoying this, despite uncharacteristic rendering errors in a couple of places...