JUNGWON from K-pop group ENHYPEN collaborated with Japanese singer and actor Yamashita Tomohisa on the official soundtrack for the film '正直不動産 (Shojiki Fudosan)'. JUNGWON participated as a featured vocalist on the OST track '声 (Koe)', which showcases warm melodies with both artists' voices harmonizing beautifully. The song's emotional composition appears in the recently released film trailer, where JUNGWON's delicate and soft vocal tone stands out, providing emotional depth to the characters amid the film's comedic atmosphere. JUNGWON expressed that this was his first film OST experience, sharing that he particularly enjoyed the calm tone of the song since it aligns with his personal musical preferences. He praised the vocal chemistry with Yamashita Tomohisa, stating the collaboration resulted in a high-quality track. Yamashita Tomohisa also expressed joy at working with the talented vocalist, hoping the song would bring comfort during lonely moments. The film '正直不動産' is adapted from a manga series with over 4 million copies in circulation, expanding from a 2022 drama series to include a second season and spinoff special before becoming a feature film. The movie is set to premiere in Japan on May 15.