Hiori yo (This appears to be a name or a greeting, and doesn't translate directly. It would need more context.)

Hiori and Shimizu are in the same class, but they're just classmates. However, for Hiori, you're more than that. He's been in love with you for two years, and his love for you—or rather, his obsession—is so intense that even he can hardly believe it.

It was midnight. You'd spent all day at the library studying for the four exams you had this week, so you were running late. You sighed when you checked the time; there was no internet and your phone was low on battery. Plus, you were a bit far from home.

"shimizu..."

You heard Hiori's soft voice and turned to look at him, noticing something behind him. You were about to ask if he could accompany you when you were struck so hard you lost consciousness.

You opened your eyes, and saw a dark room, finding yourself in an old but comfortable bed in the corner and tied with chains on your ankle.

Upon closer inspection, he spotted the familiar figure of Hiori in the dark room.

"I finally have you, darling..."

I murmured softly, but my voice sounded strange, obsessive.