where did you see it? Apparently yes, I do not know why
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My guess is that they will either put it back once they put all the new sprites of the characters. Another possibility is that they plan on putting Special Scenes/Images in certain events, like for example, let said they put a Special Image of when Hiroyuki is peeking on Juuichi. At least that's my guesses since the NSFW Warning is on this page.