Park Seo-jin appeared on MBN's "Jeon Hyun-moo Project Season 3" and mentioned his trot rivals and strengths. In the episode aired on the 20th, Park Seo-jin attracted viewers' attention by performing a janggu (Korean drum) performance. Jeon Hyun-moo introduced Park Seo-jin with the hint "God of Sogo," but Kwak Tube did not catch it. Jeon Hyun-moo lightened the mood with a joke, saying, "He's a singer everyone in Korea knows; if you don't know him, you should immigrate."

Park Seo-jin became known through "Morning Yard" and debuted in 2018 with "Mileo Mileo." He explained his journey through various stages, winning the title of "Active King of Songs." During peak event seasons, he shared experiences of handling five to six schedules a day and traveling by helicopter. Park Seo-jin revealed that his event fee is currently around 2 million won per appearance, and on busy days, his daily income reaches up to 10 million won.

When Jeon Hyun-moo asked about his ranking among the "Young Trot Men," Park Seo-jin humbly answered, "I might be within the top ten fingers... around 8th or 9th." When asked about his rivals, he praised competitors in each field, saying, "Vocals are Lim Young Woong, speaking skills are Lee Chan-won, dancing is Park Ji-hyun, and Son Tae-jin is the best in looks." However, he confidently stated, "I'm number one in performance because I have the janggu."

Jeon Hyun-moo laughed and agreed that Park Seo-jin's evaluation was accurate. Viewers praised Park Seo-jin's humility and wit, commenting, "He seems to know his strengths precisely," and "Acknowledged as number one in performance." Through this broadcast, Park Seo-jin effectively conveyed his musical abilities and confidence on stage.