Artist name romanization help

Can't figure this one out: 奈槻さお
http://sao.mys-web.net/top.htm

I get the "sao" part from the website, but the first two characters confuse me.

Natsuki or Natsuku.

Natsuki Sao it is then, thanks.

Appropriate topic name receives a hijack. I'm not actually sure what to do with 童謠幻 (Pixiv name of artist on post #600512). Any advice?

Cute. I have NFC what to do with him, so we can just as well go with douyougen, since that's what on-readings of the kanji would yield. Probably.