Kai has completely sold out every copy of December's 'Big Issue'.

'Big Issue' is known for using half of its proceeds to hire the homeless as sales clerks at magazine vendors. Originally, only 15,000 copies were printed, but every single copy sold out in two days. The magazine quickly printed 5,000 more to keep up, but even that is almost out. It's the most the magazine has sold this year.

The magazine said, "Fans shared where the magazined=s were being sold through SNS, and hurried over so the homeless sellers on the streets could finish quickly and get to somewhere warm faster. The fans added to the star's charitable actions."

The magazine will be printing more so more fans can buy and help their cause.