Copyright infringement

[Soviet Games]

This item: http://steamcommunity.com/market/listings/753/503300-Classroom?filter=Super%20Star is from our game Everlasting Summer. I don't remember giving you any permission to use it in your game. Remove it ASAP or we will take any legal actions necessary.

[Shippou]

I am sorry that our art is commissioned to the art company design, and later some players told us that some pictures are from other authors, we have found the infringing pictures to delete. Since the card and the background are not allowed to be modified after the release, so you can see it. If there are other problems and errors, please continue to give us tips and criticism, we will modify as soon as possible, thank you.

[Soviet Games]

İlk olarak Shippou tarafından gönderildi:

I am sorry that our art is commissioned to the art company design, and later some players told us that some pictures are from other authors, we have found the infringing pictures to delete. Since the card and the background are not allowed to be modified after the release, so you can see it. If there are other problems and errors, please continue to give us tips and criticism, we will modify as soon as possible, thank you.

I didn't understand a thing from your post, but still expect you remove this background.

[Blue Sky]

Long ago your friend has contacted me, I also deleted the picture. Now you see the old figure in the store, they have been deleted in the game.
I am so sorry about that, please forgive me:(

[Soviet Games]

God forgives, I will settle this matter with Steam support.

[Blue Sky]

This is the modified screenshot
https://drive.google.com/open?id=0Bxvy57TuAkF-d3ZrVEYxaWZlbmM

[Blue Sky]

After your friend contacted me, I have immediately deleted the picture, I do not understand why the background of the steam store is the old picture. I've sent you a screenshot of the steam background modification page.

[Blue Sky]

https://drive.google.com/open?id=0Bxvy57TuAkF-STZudWhUUUhKdDg

[Soviet Games]

Why should I care? I see my artwork on community market, and that's enough for me. You could've contacted Steam support. If you steal other people artworks, then you should be prepared to face consequences.

[Blue Sky]

I'm sorry again,I will contact the steam staff to handle the background in the store:)

[Blue Sky]

I have done that,My request has been submitted to the Steam Team.

[Blue Sky]

@Soviet Games It is ok now,Thank you for your criticism and advice:)

[lookshouldchill]

lmao

[Kidlatz]

so funny

[RikaxNipah]

Don't see how it's funny, they do not speak English as a first language.

[-V-]

İlk olarak Shippou tarafından gönderildi:

I am sorry that our art is commissioned to the art company design, and later some players told us that some pictures are from other authors, we have found the infringing pictures to delete. Since the card and the background are not allowed to be modified after the release, so you can see it. If there are other problems and errors, please continue to give us tips and criticism, we will modify as soon as possible, thank you.

It means they bought the art from a third party, usually a "stock art" company.

Blame the company that is selling your art.

This happens very frequently in the Stock Art market, and you are BOTH victims; SovietGames for having it stolen, and BlueSky for accidentally buying stolen works.

http://writersweekly.com/this-weeks-article/writers-beware-are-you-using-stolen-art-without-knowing-it-by-tiana-bodine
http://kirilee.deviantart.com/journal/Stock-Copyright-Shutterstock-iStock-vs-DA-431544652
https://designshack.net/articles/graphics/what-to-do-if-someone-steals-your-design/