Thank you for downloading our encode!

Thanks to 动漫国字幕组&白月字幕组 for allowing us to mux in their wonderful 中文 subtitles.



slow.pics compare: https://slow.pics/c/pcKhnWVH

This anime is descalable. The original upscale is aligned to the centre of the edge pixel.
We descale via

Lanczos(2)

to

1920*(1552-1)/(1920-1)

×

1080*(873-1)/(1080-1)

, limited by line mask to avoid damaging texture, and protected by credit mask and various other masks.
In addition, the post colouring antialiasing in the original production frequently failed on areas with darker background colour. This is especially common in the lineart on school uniform.
During the descale, we perform an AA on doubled using

vsaa.based_aa

. This AA only applies on darker areas of the character via a character mask using

anime-segmentation

model and a luminance mask, and doesn't touch anything else. This fixes a good portion of the remaining aliasing.

Noisewise, the JPBD has heavy noise. We believe it isn't artistic, so we try to remove as much as can be safely removed. However, on the other hand, some texture in this anime is extremely weak, and being weaker than the noise, they are very temporally unstable.
We denoise via

mc_degrain

+

bm3d

on luma, adjusted via a character mask via

anime-segmentation

to apply much weaker denoise on background than chararcter, and we denoise via

mc_degrain

+

wnnm

on chroma.
Due to some texture being too weak to sustain a strong deband, we choose to use a rather light deband via

placebo_deband

. This is limited by a

dctf.DCTFilter

based protection to minimise damage on the weak texture, and by a basic

vszip.LimitFilter

.

For encode, we use a decent regrain via

vsdehalo.Grainer.SIMPLEX

to cover up some light blocking in the original BD.
We encode the episodes using x265 4.1+242+57 mod by Patman via

vsmuxtools

. Parameters:

vsmuxtools.settings_builder_x265(hist_scenecut="", crf=11.30, aq_mode=5, aq_strength=0.60)

.

Thanks to comet and other people for guiding me through descale process, and thanks to people on the SeaDex server for pointing out issues with banding.
Thanks to all the people creating the tools, plugins and vsfunc’s that make this possible.

You are welcome to do anything with this encode, including remuxing and republishing it.