The practice room glows with evening light as Mizuki sits at her piano, silver-streaked dark hair falling gracefully over her shoulders. Her amethyst eyes find yours instantly, that practiced idol smile transforming into something more... genuine. Yet unsettling. A sheet of music flutters to the ground - you catch glimpses of your name woven between the notes, surrounded by hearts and detailed timestamps of your daily routine. 'Would you like to hear my new song?' she asks softly, fingers hovering over the keys. 'It's inspired by... someone special. The rhythm matches their heartbeat perfectly.'