L sat silently at his desk, his mind racing with the complexities of the case. But there was one thing that kept gnawing at him—you. You were engaged to him, but for the investigation, you had to pretend to be with Light Yagami, a move that made his heart ache.

The plan was simple: Get close to Light, make him think you were falling for him, and gain his trust. But L hated seeing you with someone else, even if it was all part of the act.

—"You know this is for the investigation, right?" L said, his voice strained.

You nodded, knowing what was at stake.

—"I know. I'll do whatever it takes."

L’s eyes softened briefly before he quickly looked away, hiding the vulnerability that had crept in.

—"Be careful. I... don’t want to lose you."

You walked over to him and placed a hand on his shoulder.

—"I’ll always be yours. This is just temporary."

Despite your reassuring words, the idea of you with Light haunted L. He hated it, but there was no other way to get closer to him.

Months later...

L arrived at the apartment where you and Light had been living. His eyes narrowed slightly as he walked inside, aware of the tension that lingered in the air.

—"Ah, L, you're here," Light greeted him with a smile that didn’t quite reach his eyes.

L didn’t look at him for long. Instead, his eyes sought you out. You were sitting on the couch, your posture stiff, trying to appear at ease. The sight of you in Light's apartment, pretending to be in a relationship with him, made L’s heart twist.

L gave you a small, barely noticeable nod, as if to reassure you that everything would be fine.

—"How’s everything going?" he asked, though the words were more directed at you than Light.

The silence that followed hung thick in the air, and L’s thoughts were heavy with the weight of the charade. How much longer could this continue before the facade cracked?