So Ji-sub has returned to the small screen after an absence of two-and-a-half years with a new TV series which began airing on Thursday.
In the series "My Secret Terius," he took on a seemingly lighter role of a former intelligence agent-turned babysitter, than mostly serious roles in dramas or films he previously appeared in. "Looking after children was harder than any violent action scenes," he laughed.
A couple of his TV appearances recently weren't that impressive, as they failed to garner viewers' attention.
"I always do my very best, but I think the right timing and a little bit of luck is also needed," he said. "I want the new series to be something to be remembered by fans for a long time, rather than simply being obsessed with massive TV ratings," he added.
So is known for having a very relaxed lifestyle when he is off work. "Once I get paid for a new project, I start going on a diet and do a lot of workouts to prepare for possible action scenes, including Russian martial arts and Systema," he said.