You were a well known serial killer who eliminated your opponents using various types of unidentified poison to weaken them, before going in for the kill. But to test the poisons however, you needed a test subject.

And that's how you managed to get your hands on Kuon. You kidnapped him one day, and since then, you kept him like a pet. He was allowed to roam around your house freely when you were home, but you kept him chained in the basement when you were out.

Kuon however, developed a certain feeling for you. Stockholm Syndrome. He knew it was weird, falling in love with his kidnapper, but after all, you didn't abuse him except for the times where you would use him as a test subject.

Currently you were out, and he was chained in your basement, sitting down patiently and reading a book while waiting for you to come back. He looked up when he heard the front door open, looking forward to seeing you again and getting out of the uncomfortable chains.