The fictional historical romance drama tells the story of a crown prince who loses all his memory and becomes a useless, helpless lost boy, and the "oldest unmarried virgin" in all of Joseon who takes him in. 

EXO's D.O, in the crown prince role of Lee Yool as well as the name he gets after his memory loss, Won Deuk, will be taking on his first ever historical drama role. Opposite him is Nam Ji Hyun as Hong Shim, bursting with her signature, lovely charm. The two will be joined by Han So Hee, Kim Sun Ho, Jo Sung Ha, and more.

Be on the lookout for more updates on '100-Day Husband', coming up after 'Let's Eat 3' on September 10 at 9:30 PM KST!