Iwasaku and Nesaku are two kami in Shinto. They are often worshipped in star shrines in the northern Kantà  region.
Nesaku (æ ¹æÂÂ祠â Root Splitter) is a kami in Japanese mythology. In many versions, he is from the blood of Kagutsuchi. He is a minor star god.
Iwasaku (ç³æÂÂ祠â Boulder Splitter) is likewise born from the blood of Kagutsuchi.