monitoring (vocaloid)
A Vocaloid song by DECO*27 featuring Hatsune Miku with PV designed by kee.
About ten months after the initial release, on September 5th, 2025, DECO*27 released a "Best Friend Remix". While the original seems to be about an obsessive stalker, the remix offers a new perspective with different lyrics and PV with the endings of each PV reflecting the perspective of the other.
