TVXQ made a guest appearance on the January 9 edition of SBS radio program 'Cultwo Show.'  On this day, member Yunho revealed that he was close friends with actor Son Ho Joon, who was most recently in 'Reply 1994.'

Yunho said, "We almost lived together like a family since our high school days . . . We are close to the point that the last digits of our phone numbers are the same . . . When I was young, Son Ho Joon hyung bought me food on numerous occasions.  After debuting as TVXQ in my early twenties, I returned the favor and bought him food a lot.  During his days of anonymity, I fed and raised Son Ho Joon.  He was like my son," making everyone laugh.