On December 7th KST, T.O.P showed off Lee Byung Hun's gift on his personal Instagram. The idol posted a video of himself opening the signed copy of Lee Byung Hun's new book "Actor Lee Byung Hun". Inside the book, Lee Byung Hun wrote, "To my dongsaeng Choi Seung Hyun".
As a reply, T.O.P wrote "So proud of U my mentor" in the caption.
Meanwhile, T.O.P and Lee Byung Hun were on KBS 2TV's drama series 'Iris' together back in 2009.