Yunho said at TVXQ's last Japanese tour concert there won't be anymore TVXQ tours for the time being with his upcoming enlistment. A financial analyst said that TVXQ bring in the most income in SM (one tour roughly brings in $100 million USD). Without TVXQ, SM loses out on $100 million in income a year. Because they need a group to fill in for the missing money, they're shipping EXO off to Japan.