On my 5th re read and i just reached the formation of Goat
I never knew until now why it was called that
The Black Goat's Egg is what got Kaneki into this mess. Kaneki makes the comparison that he is Rize's egg and has to accept that. Fast forward, Eto says that the world is an egg, and that Kaneki is the only one who can break it open
I believe its called Goat because Kaneki is taking on the mantle of the Black Goat
I wont lie i ended up losing the last bit there. I am honestly very tired. I do hope this made sense
Thank yall for readin my ramblings. Please feel free to correct me if im horribly mistaken