Lee Sung Jong
Lee Sungjong , commonly known as Sungjong, is a South Korean singer. He is the vocalist of the South Korean boy band Infinite under Woollim Entertainment. He is also the vocalist of Infinite F.
Lee Sungjong was born in Gwangju City, South Korea, on September 3, 1993. He graduated from Jeoju Arts High School on February 7, 2012, and is currently studying at Kongju University. He has a younger brother three years younger than him named Lee Seongyu.
Source: Wikipedia