Actor Yoo Yeon-seok underwent intensive girl-group dance training for 2 months during drama filming, according to SBS News. Yoo Yeon-seok focused on achieving professional-level dance skills through concentrated training, during which members of K-pop group IVE had the opportunity to directly evaluate his performance. IVE praised Yoo Yeon-seok's dance skills, saying 'So Good,' without holding back their compliments. This demonstrates Yoo Yeon-seok's commitment to pursuing excellence not only in his primary career as an actor but also in diverse fields. The official evaluation from IVE, famous as a K-pop idol group, certifies that Yoo Yeon-seok's dance level is quite high, which has become a topic of discussion among fans. Yoo Yeon-seok's effort reflects the current trend in the entertainment industry where actors are challenging themselves across various domains.