Yoseob explained that he wasn't too fond of his part in B2ST's new track"12:30". Yoseob said, "I resented him a lot. I even expressed my anger playfully. My throat wasn't in great shape because I was going back and forth from a musical, and there was even a time when I gave up after singing only one verse in the studio." 

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Junhyung responded, "I want to keep developing Yoseob. Every time we release an album, it has to go beyond the limit." Yoseob then joked, "He's going to keep saying that I have to keep growing, and in the end, he's going to turn me into a dolphin." 

Junhyung admitted proudly, "I also have an experimental side of me. When I write a song, I choose Yoseob's high part in the beginning, but as I work more on it, I feel as though he can do more. And also, when I ask him to do it, he does it." He then added, "Dongwoon is already really good, so there is nothing that I can help him grow in. He is always the one to suggest, 'What do you think about this?'"

Meanwhile, B2ST released their special mini album 'TIME' as well as their title track "12:30", achieving an all-kill on music charts.