Here's a quick, simple guide to the any% run.

• press start
• choose the lower option on the first menu (password screen)
• enter "mo" (も), the character on the far right in the top row, twice
• enter "ko" (こ), the character at the end of the first set of five in the middle row, once
• press start
• press start and then select to skip each stage
• after start-select on the final stage, press a

password screen reference image: