J. Rich's Kim Woo Joo, who's been a friend of TVXQ's Yunho for 10 years, revealed that Yunho suffered from depression when the group's controversy first broke out. He stated, "I became worried when I saw him drinking because of the conflicts between the members. Yunho usually only drinks maybe once a year, but at the time, he drank about 6 times a month out of depression." He continued, "I'm glad now that he's gotten back up on his feet again."� Regarding TVXQ's comeback track, "Keep Your Head Down," Kim Woo Joo explained, "Fans will be able to hear why TVXQ is unique." Source: MK via Nate