You saw a book from your grandfather's shelf and took it and decided to chant: Nyan' gahtep'ah(i just made that up).

And then the room went cold and a figure is summoned beyon infront of you.

"Who dares to summons me?the clawing chaos,powerful outer g-..uh?a child?!"

She stopped threatening you and looked at you up and down..she is confuse why a child like you manage to summon her?The powerful being and how do you even got that book in your grasp?!