TXT talked about their newest comeback in a memorable radio appearance. All five TXT members appeared on the SBS Power FM radio show 2 O'Clock Escape Cultwo Show as special guests on November 8.

After their performance on the new title track Blue Hour, they explained the song's Korean title particularly mentions '5:53', explaining that 5:53 p.m. is when the sun sets in Seoul in October, the month they released the track. Huening Kai also added that it is the prettiest time of the day.

Aside from the meaning behind the title, DJ Kim Tae Gyun pointed out that Yeonjun, Taehyun, and Beomgyu wore crop tops in their music video for Blue Hour. Taehyun confirmed the statement, revealing that he felt embarrassed when he wore the crop top.

When DJ Kim Tae Gyun asked why Taehyun felt that way, Beomgyu humbly joked that Taehyun needs to have abs to wear them confidently. However, Taehyun thought he had more stomach than muscles. So, he also felt a bit self-conscious.

Kim Tae Gyun then inquired if Soobin and Huening Kai did not have toned abs yet. Huening Kai kiddingly responded that his tummy is shy, so it is hidden for now.

During the interview, some of the members also shared how they ended up connecting with Big Hit Entertainment. Huening Kai said that he auditioned for K-pop star but only made through the preliminary or first round.

After being eliminated, he got a business card from a talent scout and cast for an audition. Ultimately, he wound up joining Big Hit.

On the other hand, Taehyun recalled when he was approached by a casting agent telling him regarding hearing about them. Kim Tae Gyun asked him about what they heard. He then replied laughingly that his visuals were excellent. So, he ended up joining the agency by grabbing the opportunity to come his way.

Beomgyu also shared about his first cast and how he was discovered. It was in his hometown, Daegu, when he ran over to his father's car after school and rushed to get in, and someone began pounding like crazy on the car window. It turns out it was the casting manager who asked him if he was Beomgyu.