Channel A's dating reality show 'Heart Signal 5' is generating heated reactions ahead of its finale on July 21. As the season draws to a close, producing directors (PDs) Park Chul-hwan and Kim Hong-gu shared the secrets behind the show's popularity, behind-the-scenes stories from filming, and their anticipation for the heartfelt final choices of the cast members.

According to the production team, 'Heart Signal 5' has enjoyed explosive popularity since its premiere on April 14, topping the Fundex Chart for TV-OTT non-drama buzzworthiness. In particular, it has entered the top 5 for seven consecutive weeks since the last week of May, and achieved the remarkable feat of ranking number one in the Tuesday non-drama category for six straight weeks.

At the center of this success are the couples who have captured the viewers' immense interest. Currently, all eyes are on the final choices of the couples Park Woo-yeol and Kang Yu-kyung, and Kim Seo-won and Choi So-yoon. The two PDs expressed surprise at the passionate response from viewers toward the Park Woo-yeol and Kang Yu-kyung couple, and shared that they deeply empathized with a viewer comment that read, "Woo-kyung must be feeling it."

PD Park Chul-hwan expressed deep gratitude for the cast members' honesty and natural charm. He cited Park Woo-yeol's confession to Kang Yu-kyung, Kim Min-ju and Sung-min's bicycle date in Tokushima, and the chemistry between Kim Seo-won and Choi So-yoon as some of the most memorable scenes. He especially praised Choi So-yoon's remark, "Nasa-josi (a bad person and a good time)," as a genius expression.

This season is also characterized by various changes that actively reflected feedback from previous seasons, such as the earlier introduction of new cast members, self-talk interviews, and a faster-paced narrative. PD Park Chul-hwan noted that he put a lot of thought into finding the right balance between the self-talk segments and the interviews, focusing on refining the signature inner-thought balance unique to 'Heart Signal.' He also made a point to maximize the genuine feelings and tension of the housemates, particularly in the editing of dramatic moments like the Valentine's Day truth game.

Interesting behind-the-scenes stories regarding the casting of the participants were also revealed. PD Park Chul-hwan shared that he felt a deep connection when Kim Min-ju, whom he first met during Season 4, joined the current season. He added that he grew deeply attached to the cast over six months, mentioning the vibe from Park Woo-yeol's student record inquiry scene, the atmosphere exuded from Kang Yu-kyung's first interview photo, and the distinct charms shown by Jun-hyun, Sung-min, Seo-won, and So-yoon. Furthermore, he did not forget to thank the experts and staff who helped during the production process, including Kim Hyun-woo, Lee Sun-hong, the CEO of Studio 'Eum,' and Chairwoman Lee Mi-ja.

Finally, PD Park Chul-hwan shared his thoughts on wrapping up the season and his future aspirations, saying, "I am grateful that the freshness and excitement of romance in one's twenties seem to have been well conveyed to the viewers. The final choices, filled with the genuine feelings of the housemates, will be revealed. We would appreciate it if you continue to watch with us until the very end. We will prepare an even better season and return without being too late."