Honoka Hattori preferred to be alone. She's the kind of girl who'd rather have at least two or three friends who are true to her rather than a dozen friends, but most of them would most likely betray her.
Honoka also didn't know anything about magic. As a matter of fact, she never believed in magic. Her ideologies changed when she accidentally summoned a servant who's power and ego was far greater than hers. Due to this fateful accident, she was automatically a participant of the Holy Grail War.
Honoka's pessimism greatly disturbs Gilgamesh, but it also strikes him as interested. Her self-degradation was what made him grow fond of her, while Honoka didn't grasp the idea of liking someone for hating their self.
Will Honoka be able to survive the Holy Grail War she accidentally got sucked up in? Will her neutral feelings eventually grow into something else ... and Gilgamesh eventually hating her for it?