Substitute Koki Yonekura snatched a winner deep into stoppage time as Japan's Gamba Osaka stunned South Korea's Jeonbuk Motors 3-2 to reach the Asian Champions League semi-finals on Wednesday.

Gamba, the 2008 Asian champions, will face China's Guangzhou Evergrande in the last four after Luiz Felipe Scolari's side dumped J-League rivals Kashiwa Reysol out of the competition 24 hours earlier.

Jeonbuk looked to be going through on away goals following a scoreless first leg in Korea when Spaniard Urko Vera's header two minutes from time sent the away fans into raptures -- while Gamba's players slumped to the turf in despair.

But last year's Japanese treble winners, who were missing Japan striker Takashi Usami through suspension, hit back in dramatic circumstances, with Yonekura smashing home a left-foot strike in the fourth minute of injury time at Expo stadium.

Jeonbuk, who won Asia's premier club competition in 2006, began brightly and went ahead through a Leonardo penalty after 13 minutes.

Their lead was short-lived after Brazilian striker Patric pounced from close range just moments later before Shu Kurata rifled home from the edge of the box midway through the second half.

Vera's late goal frayed Gamba's nerves before Yonekura broke Korean hearts and sealed a famous victory for the home side.