Javascript - display 20 random KATAGANA images (Japanese Alphabet) and compare user input if the english counterpart is corrent

Sir,

Kindly help me on this matter, I wanted to Display a 20 random KATAGANA (Japanese Alphabet)images (why images, because it would be easy to do it rather than typing the alphabet and you need to download language plugins), Then the user will input and determine each KATAGANA in English alphabet form, and validate if is correct or wrong.