Danbooru-based image board with a specialization in high-quality images.
fujinomiya_neko masamune-kun_no_revenge nopan see_through seifuku tiv wet_clothes

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This manga is pretty good - does this picture imply that it's getting a show?
Not necessarily. Artists often make random drawings just because when inspiration strikes. Some also do it just to hone their skills even without an inspiration when they have no paid work to do.