The term for soccer in Japan is "sakkaa". The spelling in katakana is sa-tsu-ka-a.
People in England call soccer 'Football'.
People from Japan are call "Japanese People".
Generally people just call it Soccer but some people who actually play, coach or watch a high level of Soccer/Football will call it Football.
Both Korea and Japan are great soccer players. However, many people think Korea is better.
People in Mexico call it football
Japan Soccer League ended in 1992.