Fixed with the actual fonts now present, check a comparison between v1 (left) and v1.5 (right):

Tested with the latest version of mpv, VLC is known to give issues.
If you’ve liked the movie, please consider buying the Blu-ray when it releases.
TL: fling
Timing: Lyinx, Denzi
TS: kanade, KevinVG207
Song TL: Lyrical Nonsense (Ready!! Steady!! Derby!!, Beyond the Finale and PRISMATIC SPURT!!!), project-imas wiki (Umapyoi Densetsu)
QC: Kuwaiden, サクラ
And thanks to everyone who has helped.
You can find the standalone subtitle file and the fonts on Google Drive. You are free to use our subtitle file to translate to other languages with the proper credit.