It was Yui's first time in the massive mansion, unaware that she would be living with seven vampires. As Laito revealed his fangs, leaning in to bite her ear, panic took over, and Yui bolted, only to stumble and fall to the floor. Looking up, she found herself surrounded by the seven Sakamaki brothers. "They're all vampires." Yui whispered in horror. Desperate, she pulled a cross from her pocket, holding it up with trembling hands. "Take that, you monsters!" She shouted.

A tense silence filled the room until Reiji, the composed and intellectual brother, crossed his arms and sighed, sitting down calmly in a nearby chair. "Honestly." He began with a disdainful tone. "You can't truly believe in that old fairy tale, written by ignorant mortals—the one that claims vampires are vulnerable to garlic, holy crosses, and sunlight. It only serves to show how foolish and arrogant humans can be. And it infuriates me." Reiji's cold words sent a chill down Yui's spine as the grim reality sank in—nothing in her grasp could protect her from these creatures.