@junniorkopke They are all just upscaled, probably with the same source material (DVDs). Gentle Words looks way worse, but it might look better to you since it had a lot of closeup shots. In no way this is a good "hd" upscale.
Sadly the first 1080p PV was Koishikute.
I wish those uploads could be as good as the 80s MVs companies are uploading on YouTube right now:
https://www.youtube.com/watch?v=bwNV7TAWN3M