Name: 蘭宮涼 (らみやりょう) (Ramiya Ryou)
Circle: 穿山甲 (Senzankou)
Female erotic artist, married to fellow erotic artist Utatane Hiroyuki. She's been around a long time, and has been known to hang around at GAINAX HQ cosplaying as a maid.
Some say her style started out very generic, then became very distinctive until she married Utatane, and her style has evolved to look more like his. Others believe that it's quite unique in and of itself, very indicative of the leading trends of bishoujo art from the late 80s until the mid 2000s.