Cheon Beom-seok defeated Hong Seung-min and advanced to the next round. On the broadcast of SBS's "Our Ballad" on the 14th, the 1-on-1 battle of the second round took place. Hong Seung-min, Cheon Beom-seok, and the Earbud Boyfriends participated in the battle that day.

Hong Seung-min chose Sung Si-kyung's "Forever." Cha Tae-hyun expressed concern, saying, "Sung Si-kyung's songs don't have a high success rate on audition programs because Sung Si-kyung is so unique." However, once the stage began, the audience couldn't help but be amazed. Hong Seung-min presented an original performance that did not remind anyone of Sung Si-kyung and addressed all the issues pointed out in his previous performance. Praise from the Top Back Guys followed. Mimi said, "He completely captured the hearts of women," adding, "When he sang the first verse, my heart was pounding. Then our eyes met, and I felt like I was the protagonist of a confession."

Cheon Beom-seok chose Lim Young-woong's "Can We Meet Again" and styled the stage in his own way. He performed while playing the keyboard again this time. Jeon Hyun-moo praised him highly, saying, "I got goosebumps because it felt like our star appeared on Our Ballad." Danny Koo admired, "I've studied piano for four years, but this skill is unbelievable. And he knows his voice well. It was such a perfect performance." Kwon Jin-ah evaluated, "I listened very well, and both the playing and singing were top-notch. He's 21 years old but gave a mature and deep impression."

Before the overall voting results were revealed, the votes of the eight representatives of the Top Back Guys were announced. The result was split 4 to 4, raising curiosity about the final outcome. The final result was a 27-vote difference, with Cheon Beom-seok advancing to the next round, and Hong Seung-min ending his journey after the second round. All participants expressed their regrets.