I thought I became an adult (Inst.)

I thought I became an adult (feat. Do Woojin)

I thought I became an adult (feat. Do Woojin)

I thought I am mature (feat. Do Woojin, Kim Sungjin, Kwon Hyunggu, Kim Nayoung, Park Jiwon, Yoon Yeji)

I thought I cannot be an adult (feat. Do Woojin, Kim Sungjin, Kwon Hyunggu, Kim Nayoung, Park Jiwon, Yoon Yeji)

I became an adult (feat. Do Woojin, Kang Minji, Lee Songhee, Kim Nayoung, Park Jiwon, Yoon Yeji)

I became an adult (feat. Do Woojin, Lee Songhee, Kim Sungjin, Kwon Hyunggu, Kim Nayoung, Park Jiwon, Yoon Yeji)

I thought I am mature (Inst.)

I thought I cannot be an adult (Inst.)

I became an adult (Inst.)