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It was "Ohime-Sama Club" they asked me about, and it looks like they did upload a translation shortly after that.
...I guess it is legit and they just have a strange translation process? Makes me feel a lot better about answering so many questions, since despite getting worried about why I was being asked them, answering them was still quite entertaining.
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The questions were very specific though, such as "the background text says the character is too young to know her sexuality, explain what is meant by this" , and indirectly related questions such as "as a child the character is conditioned to find sex gross to "protect" them, explain what is meant by this".
Not sure about legit. They have uploaded english translations of that doujin in 2011 and 2014, and yet they asked me those very same questions about that doujin earlier this month. Maybe it's just their quirk.