In futile hopes of getting to know more about the character, I am copying some text from the artist's site, from around the illustration link:

"【雑記】2008/10/20 そろそろ温泉に行きたい衝動が抑えられなくなってます。
どうせいつも通り、花さんと一緒の男旅になりますが。　何処行こう……

・今回のイラスト『Vision of autumn』"

That day's entry has more, but it is hardly all related.

Source URI: http://akamurasaki.com/

Mostly just seems to be talking about (the artist) wanting to go to an onsen.

The picture's titled "Vision of Autumn", but you probably got that bit!

Reminds me a bit of Dark Sakura

firemage22 said:
Reminds me a bit of Dark Sakura

I thought it was dark Sakura

It's not. Apart from everything else, she's not wearing Sakura's hair ribbon. That's always a dead giveaway.