Boy group Teen Top revealed handwritten letters for their fans on the last stage day of their title song "It's Not Easy".

On October 16, Teen Top posted on their Twitter pictures of their handwritten letters to thank their fans.

L.Joe said, "It was probably not easy supporting 'It's Not easy' but day and night, hot or cold! Angel, thank you for supporting us! I'm so proud to have Angel... I love you! You're mine!"

Internet users who saw this commented, "It's already the last stage?," "It's not easy to send away Teen Top," and "How cute of them."