工藤 ゆきな

As determined by her job, Yukina pretends to be a weak, sickly school girl to keep her identity hidden. By day, she's a pretty, soft girl with a boyfriend named Youji who spends her days like most schoolgirls, but by night, she has a deadline looming over her head. No one knows what will happen to her if she fails to meet the requirements of her secret occupation. [From the official website in English]