Thanks!!Eh, I don't think the site will do anything to you. One of the covers currently on the front page is directly ripped off from Food Wars and I've seen users who've used art they've ganked from Pixiv.
Sites like Tapas won't allow you to use art/characters that don't belong to you without permission even with credits, but the SH admins don't seem to mind it as long as they're not explicit/nude. You should be safe.
If you're super worried still, you can try PMing the admins!Thanks!!
+1Well, your question was already answered, but may I know what app is that? Imma add it to my collection.