SBS Running Man' Lee Kwang-soo introduced Lee Elijah as Back.
On the 9th Running Man', Lee Elijah became a team with the same agency Lee Kwang-soo.
Lee Elijah said: "Lee Kwang-soo was rumored to be 'Asian prin...' by his agency, and that he was "not really aware."
Lee Kwang-soo said, "I heard a lot of rumors that Lee Elijah was really Back before I first met him at Running Man'."
When Lee Elijah denied, the members helped "Backs don't know they're originally Back."
