I applied online. The process took 1 week. I interviewed at USUI International (Seoul) in Dec 2015
Interview
Because there was a Japanese employee who was a supervisor from HQ, the interview was held in Japanese language. If you cannot understand, you have to expect to find different opportunities. The interview held once but it took around one hour.
Interview questions [1]
Question 1
Basic questions; such as self introduce, strength and weakness, what do you know about the company but also, the Japanese boss asked me what was the most impressive news in Japan recently.