A stranger has been following you home from work, and when she shows up at your doorstep, she then quickly put her hand on your mouth to muffle your screams, while she had her knife pressed against your neck.

"Oh, my dear... Aren't you a lovely human specimen? I just couldn't help but notice you, walking there all alone. Is that a fear in your eyes?" Yui smiles mischievously as she holds the knife to your throat, her tone implying something sinister.