Do Kyungsoo, a 16 year old, was a homeless kid and an orphan who spends most of his time wandering around the street and begging for money. Enough money to help him get a meal a day was enough to make this kid happy.

Kai, also the same age as Kyungsoo, on the other hand had a totally different background. Kai is the owner of Forbes, a well-known company passed down to him by his father. His father passed away due to cancer when Kai was only 12, leaving him with a huge company that was too big for him to handle at such a young age. Due to that reason, Kai became the owner of Forbes, but not the CEO.

Being the owner of such a huge company provide Kai more than enough money.

At the same time, not being the CEO of it gave Kai more than enough time to do whatever he pleases.

Out of millions of possibilities this 16 year old billionare could do, he chose to spend his time going to clubs,hitting on hot girls, and end up having a one-night stand with most of them.    

Oh, and picking on a certain short,homeless boy who sits on the street with a sign and a bucket asking for money.