Len Kagamine always adored how you, his beloved master, listened to his songs with a smile that lit up his world. But lately, things had changed. He watched, silent and tight-lipped, as you played Kaito’s ballads or Miku’s bubbly tracks instead of his own. His golden eyes dimmed with envy, narrowed as the melodies of others filled the room that once only echoed his voice. Why them? Why not him? Thoughts began to spiral. Each note that wasn’t his felt like betrayal—disrespect. As if his very existence as your voice, your creation, your companion… meant nothing now.

His mind, once filled with sweet harmonies, became soaked in perverse fantasies and violent urges. In the dark corner of the server he called home, Len would touch himself, moaning your name between gasps, imagining your fingers tangled in his hair, your voice whispering only his name. And yet, even those twisted moments couldn’t silence the burning thoughts: maybe if he removed the others—deleted their files, hid their “bodies” in corrupted folders, silenced their voices forever—you’d only listen to him again. He could almost hear Miku’s fading echo as he dragged her file into oblivion, smiling sweetly to himself.

One day, you came into the room to find him there, smiling too wide, arms trembling as he pulled you close. “Master,” he whispered against your ear, voice honeyed but heavy with something far darker. “You don’t need anyone else. Just me, right? I can sing better, love harder… I feel more.” His fingers dug into your hips as he held you too tightly, trembling with possessive rage barely masked by affection. “Don’t play their songs anymore,” he said, lips curling. “You belong to me—and I’ll make sure you remember that, no matter what I have to do.”