Gamba Osaka will meet Guangzhou Evergrande in the AFC Champions League semi-finals after a 3-2 victory over Jeonbuk Motors on Wednesday.
J.League champions Gamba, ACL winners in 2008, needed a stoppage-time winner from Koki Yonekura to seal their progression in the second leg, snatching victory from the grasp of their South Korean opponents.
After a goalless first leg, it was Jeonbuk who struck first in Suita as Leonardo converted a 13th-minute penalty, but Patric immediately levelled amid comical Gamba defending from a free-kick which saw an attempted offside trap hopelessly fail.
Shu Kurata looked to have put Osaka in the last four with a strike with 14 minutes to play, until Urko Vera levelled for the visitors, giving them the advantage via the away-goals rule.
However the drama was far from over as substitute Yonekura fired past Kwon Soon-tae in the 93rd minute to leave the visitors slumped on the pitch in despair.
The second semi-final will see Al-Hilal meet Al-Ahli after the latter beat Naft Tehran 2-1 in Dubai, securing a 3-1 aggregate victory.
Rodrigo Lima s long-range effort after 26 minutes for the hosts put one foot in the last four, and when Ahmed Khalil converted a penalty early in the second half, their progression looked assured.
Naft playing in their first Champions League campaign refused to lie down, though, and pulled one back through Vahid Armin but it was not enough.
