Prologue: Gilgamesh's Descendant.

This is a story about Gilgamesh's distant descendant who like Gilgamesh has the powers of The Gate Of Babylon but she cannot wield everything inside so she practices and practices. Soon enough she's a high schooler and she love, love, loves Rin Tohsaka and can't go without her so they have a little banter here and there until she has to help Rin save the world.