Byeon Woo Seok's 'Parallel Lines' OST for '21st Century Grand Prince' Delivers Emotional Impact

Actor Byeon Woo Seok's self-sung OST, 'Parallel Lines,' for the drama '21st Century Grand Prince' deeply moved viewers, particularly when featured in the 10th episode's ending. The song amplified the drama's emotional core, with many viewers noting that the melody lingered in their memories long after the scene concluded. Byeon Woo Seok's calm vocals, combined with the piano-centric, gentle melody, created a profound and lasting impression.

'Parallel Lines' was released on May 15, 2026, at 6 PM, and its narrative mirrors the drama's plot where two protagonists, living separate lives, eventually converge. It was strategically placed during the 10th episode's climax, where the contractual marriage is revealed, leading to a crisis, and the characters confirm their feelings amidst a fire, thus intensifying the emotional impact. Byeon Woo Seok's direct vocal performance seamlessly extended the emotions portrayed in his acting into the song.

The song's popularity was further solidified by its first-place ranking in the OST category during the initial voting round of the 17th Korea Drama Awards. Fans enthusiastically reacted to Byeon Woo Seok's sweep of multiple categories, including Hot Star, Global Star, Best Couple, and now Best OST. 'Parallel Lines' has become a significant element in recalling the drama's emotional depth, showcasing Byeon Woo Seok's versatile talents.