G-Dragon, 25, said that he had "finished" recording new music with Bieber and the tune would come out "sometime next year, reported Ace Showbiz.
"But more than it being a really big project, I think it'll be an album where artists with the same heart decided to have fun.
"It was less burdensome than a big album, so I'll be able to show a better song to the fans. If you have anticipation for it, I'll reply with an album that will meet those expectations," he said.
The 25-year-old performer, whose real name is Kwon Ji Yong, later made a guest appearance at Bieber's concert in the country to sing his own single called 'Crayon'.