I know that there were many, many, many changes made from the book Ready Player One to the movie adaption. But the most puzzling to me is why the character called "Shoto" in the book was renamed "Sho" for the movie?

They kept his partner's name, Daito, the same. And since Daito and Shoto are both classifications of Japanese swords, it seems it would make more sense (especially for Japanese audiences) to keep the name as "Shoto".

Any idea why the filmmakers made this seemingly capricious change?