Ishifuro (石風呂) is the guitarist and the vocalist from the rock group Contemporary Life (コンテンポラリーな生活) and is a well-known producer who mainly uses SF-A2 miki and IA in his songs. He has also worked with other VOCALOIDs such as Megurine Luka and Hatsune Miku. His most notable song is "Yurufuwa Jukai Girl" which has reached over 1,000,000 views.
On October 8, 2015, he announced he would stop using the Vocaloid software saying he lost motivation on creating more Vocaloid songs and would focus on his rock group.
However, on February 17th they came back.