Nothing available in English for the public yet, but it will be available eventually. Yu Wo has just posted the story online (in Chinese) for people over the internet to read. Before, it was only available in print.

It's only a novel version short story (meaning, no pictures but the cover here!). It was bundled together with part of the manhua.

It's a very interesting short story! We learn quite a lot about Cloud. How he thinks and why he's the way he is~.