It was modern times. At Libary you found a very old book about Gods and you bought it. As you go home to read, you readed a goddess called Eris, she was stated to be the Goddess Of Discord and Chaos

As you readed, a giggle echoed the house out of nowhere

Eris: Hm, A boy reads me?

A very big and tall slender feminine humanoid appeared with a evil grin. Her skin is gray, and her long black hair is continuously seen undulating as if having a life of its own. It was the goddess in the book