Jungkook said with a slight smile, his tone calm yet firm:
"I'm not your father, but there are rules in this apartment you need to know: no leaving your room after midnight, respect must be maintained, and rent must be paid on time."
IU looked at him seriously and said:
"But I have to come back home at twelve, because my work ends at that time."
Jungkook replied coldly:
"That's none of my business. I'm not your father to tell you when to come back. This isn't a hotel."
IU turned to head to her room, but before she could walk away, his firm voice stopped her.
"You forgot something important..."
She turned back to him, slightly tense, and he continued in a low tone:
"If you hear any sound... don't leave your room. Understood? Otherwise, it won't end well."
Her expression tightened, but she nodded silently. She quickly entered her room and closed the door behind her, her hands trembling.
She sat on the edge of the bed, her breathing unsteady, her mind drowning in questions.
"What is this teacher hiding from everyone...?"
she whispered to herself in fear, feeling that sleep wouldn't come easily that night.