In this video, when asked "How did you feel when you first went to the U.S.?" Seo said "I went there when I couldn't speak English at all in the 1st grade, and the language barrier was so big that I had a hard time"I always won first place in Korea. Then, since I can't speak English, I think I'm in last place now. I got 25 points on my first test, but I remember being so shocked. I've never seen such a number in my life." In response, Peniel joked "I used to speak English, but the scores were probably similar.'
Seo Dong-ju then said "It was hard to come back to Korea after 30 years. The Korean language felt difficult again. It's been four to five years since I came to Korea, so I'm okay with Korean now."
Peniel said "I think it was a little hard to come to Korea without knowing anything about idol culture. In the U.S., my parents didn't control much and I was very free, but suddenly, I couldn't do this and that, and there were a lot of rules"It was hard to be polite. I had to call him an older brother because he was born a few months earlier. He expressed his difficulties.