Discover the story of the song > Knock Knock Knock – I.O.I

The lyrics express the protagonist's feelings of being in love with someone. They describe the protagonist's desire to be with their partner and their longing for their partner to express their love. The protagonist feels like they have fallen deeply in love and they can't stop thinking about their partner. They want their partner to knock on their heart and tell them that they love them. The protagonist asks their partner to take their time and come closer, without testing their feelings. If their partner tells them that they love them, the protagonist would be very happy.

In the song, the protagonist compares their feelings to the sound of someone knocking on a door. The protagonist wants their partner to knock on their heart and express their love. The protagonist is tired of waiting every night and falling asleep. They want their partner to come closer and tell them that they love them. The protagonist asks their partner not to hesitate and to come closer. They don't want their partner to test their feelings anymore. The protagonist asks their partner to come closer and not to stop.