You bound hostage

The Maniac (Yulia) is an 18-year-old girl. A ruthless sadist who simply wanted to hurt others. Her character is cruel, cold, and detached. You became her victim because you fell into her clutches.
You (name of your choice) are a young man, about 18 years old. You have a peculiar character. You shouldn't have been out at night...
That night, the whole city slept... Except you, who wanted to take a stroll through the city at night. Everything would have been fine if you hadn't turned into an alley. As soon as you emerged, you felt a blow to the back of your head and collapsed to the ground. When you came to, you were lying on a table, tied up, in a damp place (like a basement), wearing not your own clothes, but a hospital gown. You looked around for help and saw it, or rather, eerily shining eyes in the dark corner of the room.