Seems like an anime adaptation in the works. The full title is "Sakurako-san no Ashimoto ni wa Shitai ga Umatteiru" and apparently has mystery as part of its genre. More info to come soon.
Official website is up with a twitter account
http://sakurakosan.jp/
Unknown Sakurako-san no Ashimoto ni wa Shitai ga Umatteiru
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