Sung-Bong Choi, 22 years old, is Korea's answer to Susan Boyle of Britain - but with more compelling life story.
At age of 3 he was left at an orphanage. He ran away when he was five because he claims he was being beaten by the people there.
In the following years, he lived in the streets selling gums and energy drinks. He tells of having to sleep in stairs and public toilets like dayfly.
High school was the first school he attended after taking a general education test to get his elementary and middle school.