What actors and actresses appeared in Gong - 2001?

You're likely referring to the film "Gong" (2001), a South Korean fantasy romance film.

Here are the main actors and actresses who appeared in the film:

* Lee Jung-jae as Gong Tae-woong

* Kim Ha-neul as Eun-suh

* Lee Seo-jin as Jun-ho

* Lee Eun-joo as Jin-ah

There were other supporting actors in the film as well, but these are the primary cast members.