Well there's a YouTube page on her channel called MASK with a video that's currently 'unavailable' so I assume they will release it there?
Ayu said on Insta that the song would drop at 24:00, so I assumed the video too, but maybe we have to wait. Or maybe there will be no video, who knows

OK so just saw on a tweet that streaming platforms get updated 'in your local time zone'... (I'm in the UK)
but also that MV info will be shared tomorrow - damn!