On March 20, 2026, ANDMARQ posted a new video on Instagram, showing PENTAGON’s Hongseok on the set of his special cameo for 'Monthly Boyfriend'.
In the clip, Hongseok transforms into the ultimate idol boyfriend, his soulful gaze stealing fans’ hearts. The set was packed with PENTAGON merch, giving fans an even closer, fan-service-filled experience.
Fans reacted enthusiastically, leaving comments like "Hongseok is the best idol."