Haniyasubiko (波邇夜須毘古神 – Kneading Clay Lad) is a Shinto kami born from the excrement of Izanami in her death throws after being burnt by giving birth to Kagutsuchi, this is all related in the Kojiki. His sister is the kami Hanayasuhime and he was said to have been enshrined in Yamato.1
1. Yasumaro. O, translated by Gustav Heldt. (2014) “Kojiki. An Account of Ancient Matters”. New York: Columbia University Press.
2. Aston. W.G. (1896) “Nihongi Volume 1: Chronicles of Japan from the Earliest Times to AD697”. Tuttle Publishing.
Check out the Japan Archives, our Japanese History Podcast