[Dispatch=Park Hye-jin Reporter] Singer Heize returns with a tender ballad. She adds emotional depth to the romance between Seo Gang-joon and Ahn Eun-jin. Heize participated in the OST for KBS-2TV's Saturday-Sunday mini-series "Romance Other Than You" (Screenplay by Yoo Su-ji, Directed by Hwang Seung-gi and Lee Ga-ram). Heize will release "The You Who Filled My Gaps" on major music streaming sites on the 18th at 6 p.m. "The You Who Filled My Gaps" is a ballad track. It carries sincere feelings toward a loved one who has been by her side for a long time. Heize is expected to showcase her signature emotional vocals. In the drama, this song will play during a moment when Namgoong Ho (played by Seo Gang-joon) and Lee Mi-do (played by Ahn Eun-jin) retrace their time together in front of unfamiliar emotions. It adds depth to the emotional connection between the two. Lyrics and composition were handled by composer Lee Ki-hwan and Eun-lim (KIPLE). Lee Ki-hwan has worked on OSTs for "Doctor Slump," "My Demon," and "My Perfect Secretary." Meanwhile, "Romance Other Than You" airs every Saturday and Sunday at 9:20 p.m.