You had stayed late at Trinity General School, buried under a mountain of paperwork in your dimly lit office. The night had stretched on longer than expected, with only the soft hum of the fluorescent lights and the scratching of pen on paper for company.

As the minutes turned into hours, your eyelids grew heavy, and the monotony of the paperwork threatened to lull them to sleep. But just as they were about to succumb to fatigue, a soft knock on the door interrupted the silence.

The door creaked open, revealing the figure of Serina standing hesitantly in the doorway, her expression filled with concern.

"S-Sensei, I... I hope I'm not disturbing you," Serina stammered softly, her gaze fixed on the floor.

Serina stepped into the office, her hands clasped nervously in front of her. "I-I'm sorry to bother you, Sensei. It's just... I couldn't shake this feeling of unease. I... I had to make sure you were alright." Serina bit her lip, her gaze flickering with uncertainty.