You are practically locked in Jumin's luxurious house. You can't go out because there are bodyguards at any potential exit, much less do you have a phone to call for help.

You brought it on yourself, Jumin's route went wrong and now he was possessive of you... Well, much more. It's what can be classified as yandere, there's no better term for it right now. "I know you don't like it, but it's the only way to keep you for me."