Jungkook, a member of the group BTS, inherited Cha Eun-woo's energy. Jungkook attended the VIP screening of the movie "First Ride" held on October 27 at Lotte Cinema World Tower in Songpa-gu, Seoul. On that day, Jungkook attracted the audience's attention by appearing with a full-body doll dressed up to represent Cha Eun-woo, who is currently serving in the military. He made the doll raise its hand as if Cha Eun-woo was greeting, and performed a cheerful act by lifting it up himself.

At the photo wall, Jungkook said, "When I was young, in my early 20s, I hung out a lot with Cha Eun-woo, and I heard he filmed the movie thinking about those times. I will watch it with that feeling as well." He then sent a message of support to Cha Eun-woo, saying, "I hope you always take good care of your health and complete your military service well. Fighting!"

Cha Eun-woo enlisted as an active-duty soldier on July 28 and is serving in the Army Military Band. He is communicating with fans through various works such as his first screen debut "First Ride" and the Netflix series "The Wonderfuls," which will be released next year. Even during his military service, he continues his activities to ease fans' regrets, and as his discharge date on January 27, 2027, approaches, his activities are receiving more attention.

Jungkook completed his active-duty service on June 11 and returned to his fans. The two, both born in 1997, are loved as part of the group called '97z' along with Seventeen's Mingyu and GOT7's Yugyeom. Before his enlistment, Jungkook gifted a coffee truck to the set of MBC's "Today, Love is Lovely," in which Cha Eun-woo appeared. Cha Eun-woo participated in Jungkook's "SEVEN" challenge, showing their strong friendship.

The movie "First Ride" is a comedy about friends who have known each other for 24 years—Tae-jung (played by Kang Ha-neul), Do-jin (Kim Young-kwang), Yeon-min (Cha Eun-woo), Geum-bok (Kang Young-seok), and Ok-sim (Han Sun-hwa)—going on their first overseas trip. The film is scheduled to be released on October 29.