Kagu-tsuchi is the god of fire. Kagu-tsuchi's birth burned his mother Izanami, causing her death. His father Izanagi, in his grief, beheaded Kagu-tsuchi with his sword, Ame no Ohabari (天之尾羽張), and cut his body into eight pieces, which became eight volcanoes. Mating with mortals is different for him. Women feel a burning sensation in their body and after this, the mortal is now pregnant to a demigod.
If you want to go to his cabin, go here.