Lee Huyn Il will face with fourth seed Lee Dong Keun in the Korea Masters final after both players won their respective semi-finals on Saturday.
Huyn Il, the second seed, advanced to Sunday's final after coming through a tough encounter against his sixth-seeded compatriot Jeon Hyeoik Jin, winning 21-12, 24-22 after 47 minutes.
In the first game, Huyn Il led from for nearly the entirety, but the second game was a much closer affair.
The lead continued to change throughout, but with the scores tied on 22-all, the second seed made his move and triumphed over his countryman.
In the other semi-final, which also featured two shuttlers from Korea, Dong Keun surprised top seed Son Wan Ho in another relatively tight two-gamer.
Even though the scoreline was a seemingly routine 21-13, 21-16, the local pair were on the court for all of 52 minutes.
Wan Ho opened up a 7-4 lead in the first game, but Dong Keun soon levelled matters at 7-7 and held the lead through the remainder.
The second game followed a similar trend, with the top seed leading 7-4 and 8-5 at one stage, but after Dong Keun drew even at 10-all he never looked back and won 11 of the next 17 points to book his place in the final.