Riku, a member of the group NCT WISH, has brought smiles to global fans with a warm handwritten letter gifted to Huening Kai of TOMORROW X TOGETHER (TXT).

Recently, music broadcast behind-the-scenes content for "Stick With You" was uploaded to TOMORROW X TOGETHER's official YouTube channel.

In the video, TXT’s Huening Kai personally showcased the album he received as a gift from NCT WISH’s Riku. What particularly caught the fans' attention was Riku’s handwritten letter meticulously written on the album cover.

Through the letter, NCT WISH expressed affection toward Huening Kai, saying, "Kai hyung! Congratulations on your hard work during the promotions. Thank you so much for asking me to do the challenge with you. Let's hang out after promotions are over!"

With a touched expression, Huening Kai showed his immense love for his junior, adding to the heartwarming atmosphere by saying, "They are so cute and lovely."

Fans who watched the video showered it with warm responses, commenting, "I support this senior-junior friendship," and "It's so obvious how much Huening Kai adores his juniors."