FishingmanMAX (鱼)'s artworks, including the artist's Pixiv, Twitter and Patreon posts.
Some of the artist's old work were low-res (some even go low as 500×700) and heavily compressed, I grabbed the artist's commissions across those platforms, removed most SFW ones, deduplicated, and sorted them in post time order (oldest-newest).
The latest Real-ESRGAN image restoration model was used to upscale (2.0x~4.0x depend on the original input resolution, the training model was designed for 4.0x upscale intended, but it can be used with resampling algorithm such as Lanczos) and restore (denoise, remove JPEG artifacts) the image.
Real-ESRGAN took about 8 hours to crunch down all 300+ images on my machine.
All uploaded pics were compressed with lossless PNG compression level 9.