Very fun game, love the art and humor. I found it from the Tom Scott news letter! If you don't follow it this is what he wrote about it:
Titivillus Teaches Typning [sic] is a lovely little in-browser typing game that's themed to look like an illustrated manuscript. It has a lovely twist: if you hit the wrong keys, the demon of typos will store your incorrect letters in its shame bag and add them to later words. This is a combination of joyful, stressful, and beautiful.