I am learning Japanese because it is required by my department. Modern Korean history majors are required to demonstrate 5 years worth of Korean language training and 3 years worth of Japanese language training in order to graduate. I also have several Japanese-American friends and Korean-Japanese friends who speak Japanese regularly.
Since I know Korean it has been easier for me to learn Japanese in terms of grammar structure. Memorizing vocabulary and characters has been a challenge, however.

はじめまして。ドリ“ぴかちゅ”ソンです。にじゅうななさいです。アメリカのオハイオからきました。コロンビアだいがくいんのがくせいです。にねんせいです。どうぞよろしく。