Add a link to an easier to follow to readme guide, perheps with a "what not to do" disclaimer.
Also add a some scripts to make sure we have all the prerequisites we need and maybe handle downloading

How about some instructions on using your software? Some, ANY kind of instructions. It looks like you put a good bit of time into this so some decent instructions would be awesome please...

Would be nice to add a switch to tune HTTP engine like how much to sleep between each request , this would prevent/bypass rate limit.

You should order masks by efficiency (occurrences/key_space) because this will lead to the less guesses to crack passwords.

Looking at the top 5:
https://github.com/kaonashi-passwords/Kaonashi/blob/5239bd333ed34993b43126a4499606ba70086034/masks/kaonashi_masks_numbered.txt#L1-L5

And ordering just the 1000 in kaonashi_masks_numbered.txt by efficiency the top 5 are now:

673407:?u?u?u?u