Yes, Yuki has played in the Asian Cup. He played for Japan in the 2015 Asian Cup and the 2019 Asian Cup. In the 2015 Asian Cup, he played in all four of Japan's games, starting in three of them. In the 2019 Asian Cup, he played in all six of Japan's games, starting in five of them.
The Rising Star: Test Your Knowledge on Yuki Kobayashi (Footballer, Born 1992)