For those who aren't aware, there are fanmade BGM tracks for Omniscient Reader's Viewpoint by MZ! Also included in the playlist are songs by NingQ and NeruV. Go give them a listen! They're really beautiful and reflect the novel so accurately!
Here is a link to a playlist on Soundcloud for those who prefer listening on Soundcloud rather than YouTube:
https://soundcloud.com/claire-oh-701163665/sets/omniscient-reader-1