Boy Next Door's pre-release song "Knock Knock" first stage

Boy Next Door unveils the first performance of their 1st full album pre-release track "Knock Knock" on M Countdown!
You really brought the song to life and showed off an amazing performance!
I heard we can see the "Knock Knock" performance two more times on Music Bank and Show Music Core, haha.
I love the pre-release song activities before the release of the first full album so much😊