Admittedly I’m not sure if it works for Japanese, but English has online tools you can use to print out a sheet to write out every character and scan to turn into a font file. Would be surprising if it didn’t exist for Japanese.
So ultimately you probably just need someone with neat handwriting.
Modern fonts have extra stuff to make rendering better.
Like hinting, which changes subpixel representations.
Without those, you wouldn’t like the look of something like a character with a height of 10px on a 1080p display and would have to use way higher DPI stuff, with characters taking more pixels.
Won’t be unusable though. Automatically done anti-aliasing tends to be good enough too.
Japanese fonts are much harder to make than English fonts. Thousands of characters and all that.
Admittedly I’m not sure if it works for Japanese, but English has online tools you can use to print out a sheet to write out every character and scan to turn into a font file. Would be surprising if it didn’t exist for Japanese.
So ultimately you probably just need someone with neat handwriting.
Someone with neat handwriting, a few hours to burn, and lots of patience
Modern fonts have extra stuff to make rendering better.
Like hinting, which changes subpixel representations.
Without those, you wouldn’t like the look of something like a character with a height of 10px on a 1080p display and would have to use way higher DPI stuff, with characters taking more pixels.
Won’t be unusable though. Automatically done anti-aliasing tends to be good enough too.