Dae Jang Geum
In the final episode of the 2007 series, "Yi San", a character played by Lee Ip-sae and her colleague has a moment of deja vu in the royal kitchen and came to believe that they worked there in their previous life. The same series takes place two centuries later in the Joseon Dynasty after "Dae Jang Geum". Coincidentally, Lee Ip-sae also starred in "Dae Jang Geum" and the other series is also produced by the same company and director.