Hoon Kang took a year off from college to become a teacher in Korea.
Hoon Kang was in a coma for several days after cops say he accidentally fell.
Hoon Kang taught English to Korean school children.
Hoon Kang was found unconscious in a stairwell at the Collins building in the Shinjuku District in Tokyo.
Hoon Kang was a business major at New York University.
Hoon Kang graduated from North Gwinnett High School in Georgia.
Hoon Kang went sightseeing in Asia.
The Kang family moved to the United States in 1993.