The production team of "Shinbi Apartment 10th Anniversary Movie: One More Time, Summon" has released the music video for the official OST "One More Time, Goodbye," featuring Youngjae, a member of the group TWS (Tours). This work is a grand fantasy adventure where the world star goblin Shinbi and the twenty-year-old Hari fight against the resurrected underground national enemy to save the world.

The official OST "One More Time, Goodbye" expresses the feelings conveyed from the protagonist Hari's perspective to Shinbi. The song features warm lyrics that greet the brilliant yesterday they built together and say goodbye to the countless tomorrows they will share. Planned in the K-city pop genre, this song is based on band sounds and was produced with refreshing male vocals in mind.

Youngjae has established himself as a youth icon by releasing songs such as "The First Meeting Didn't Go as Planned" and "OVERDRIVE." He completed the song's special emotion with his fresh energy and clear tone. The short humming video released earlier received enthusiastic responses from fans, and interest continues to grow following the music video release.

The released music video captivates viewers by combining footage of Youngjae's recording session with scenes of grown-up Hari and friends, as well as the world star Shinbi. The friendship between Hari and Shinbi, who have been together for ten years, the battle against the resurrected "Underground National Enemy," and scenes from the World Goblin Festival unfold alongside the song's lyrics, raising anticipation.

The lyrics include lines such as "Remember, your voice that cut through the dark night when we first met," "The memories that were full are now one of the stars shining in the sky," and "One day, suddenly thinking of you, that face that smiled playfully," evoking the protagonist's friendship. Youngjae's refreshing vocals deliver deep emotion along with these lyrics.

"Shinbi Apartment 10th Anniversary Movie: One More Time, Summon" is scheduled to be released nationwide in theaters on January 14, 2026. This work is a continuation of the Shinbi Apartment series, which has been loved for ten years, gathering fans' expectations.