Chinese speakers needed: summer (artist)

How do we tag this artist?

http://album.blog.yam.com/summer7
http://www.pixiv.net/member_illust.php?id=52545

As you can see, he goes by 夏 and summer, but neither the Japanese reading of 夏 (natsu), nor "summer" are useful. If anyone speaking Chinese can find an appropriate name for him and romanise it for tagging purposes, it'd be greatly appreciated.

summer7 appears to be one of his aliases via his blog. It's pretty unique and there's at least 3 url references to that name so it doesn't seem to be a case of "adding a random number so I don't have to change my name."

The only time I would drop a number would be if they're random and unnecessary or completely unintuitive.

Well, 夏 is xià in Mandarin, fwiw.

OK, I guess summer7 is good enough then.