1080p SDR version here: https://nyaa.si/view/1776656

Direct encode of UHD-BDRemux: https://nyaa.si/view/1480593
hchcsen’s subtitles used from https://nyaa.si/view/1598075, as he was correct, the other ones were borked.

Video:
AV1 main profile 0 3840x2160@10bit, crf 25
Audio:
5.1ch Opus 128kbit (JP)
2ch Opus 96kbit (JP)
5.1ch Opus 128kbit (EN)
2ch Opus 96kbit (EN)
Subs:
ASS - hchcsen/Kulot/Zetarebel

ffmpeg -i [infile] -crf 25 -preset 2 -svtav1-params tune=2:enable-overlays=1:scd=1:scm=2:enable-tf=0:lookahead=120:pin=0:lp=16 -g 1440 -map 0:0 -map 0:1 -map 0:3 -map 0:4 -map 0:6 -map 0:8 -c:a libopus -b:a:0 128k -b:a:1 96k -b:a:2 128k -b:a:3 96k -filter:a:0 "channelmap=channel_layout=5.1" -filter:a:2 "channelmap=channel_layout=5.1" -c:s copy -threads 16 [outfile]