渡辺サミカ (Watanabe Samika) aka. 渡辺さん 

[[Original]] character by [[Tagane]]. 
She is a twenty-five-year-old [[crab girl]] beautician and a [[monster girl]] of the "Japanese blue crab":http://en.wikipedia.org/wiki/Portunus_trituberculatus / "swimming crab.":http://en.wikipedia.org/wiki/Portunidae 
She has strange crab-like [[compound eyes]], [[claws]] and sports [[twintails]]. 

watanabe (tagane)