The first chance for Australia on the title of the Australian Amateur Championship since 2015 is no longer.
The trophy will be international with the final decision between golfers from South Korea and Japan.
Hong Yaeeun took Australia's last hopes, Victoria's Steph Bunque, into a dramatic final gap, with the #AusAm debutant who ruled with an excellent 1m par-putt under intense pressure.
The 16-year-old powerhouse will face Japanese Tsubasa Kajitani in the 36-holes final tomorrow at Woodlands Golf Club.
After nearly throwing the game away with a nervous four-putt on the par-3 17th, the 16-year-old Korean kept the putter in his hands at the age of 18 to finish a 1-up victory.
"Today was tough, I was so nervous", said the member of the Golden Bay Resort.
"I never thought I would come here, the courses are beautiful – but very different from Korea.
"I'm practicing a lot on the greens, the grass is very strong and tough."
The other finalist, Kajitani, has been a dominant force at Woodlands this week – and she hopes her stellar knockout record will last another day.
The No.16 seed earned her place after the responsibility for compatriot Riri Sadoyama in a grueling semi-finals.
Earlier, the 15-year-old Queensland eliminated the last hope for silverware in Cassie Porter with a convincing 5 & 4 victory in their quarterfinals.
The ladies final with 36 holes is planned for Sunday at 8:30.