The Snake Man

I was born inauspicious, and my fraternal brother was killed when he was born. My father hated me to the core and threw me into a mass grave in the mountains to die. The goddess said that I was the last reincarnation of a goddess with seven orifices and an exquisite heart, and that I was doomed to have a bad fate and be full of ups and downs. Grandma couldn't bear it and carried me back from the mass grave in the middle of the night, only to see a big black snake hovering next to me...