Key starters from the Korean national team are playing in Europe

In Japan, three players (Frankfurt, AZ Alkmaar, and Sint-Truiden) are in the first division, while the Danish league player (the one who missed the penalty shootout) is in the second division.
Lee Hyun-ju (Arouca), Yang Hyun-jun (Celtic), Um Ji-sung (Swansea), and Bae Jun-ho (Stoke)
Lee Young-jun (Grasshopper Club) is also a near-starter.
The overall strength of Japan and Korea seems similar.
I expect a very great match.