As we know, this drama had switched a second male lead ( Park Si Hoo ) around the middle
of the production and extended the episode to be 31 episodes to give Park Si Hoo's role a smooth transaction to become a first male lead at the end.
( Thanks to Korean viewers during that time^^)
And this conference had happened because of that reason.
That's why only Park Si Hoo came out for the press interview in that day!
Before he's officially taken a leading role in drama " Queen of Reversal "
Credit : Jundool, thank you!