N.Flying expressed appreciation towards the netizen who promoted "Rooftop."

The idol band placed #1 for the first time since their debut after their song "Rooftop" climbed up the music charts around 2 months after its release. 

On the March 15 airing of KBS2's 'Yoo Hee Yeol's Sketchbook,' Seunghyub said, "It felt unreal when we won #1 but I can feel it with us on 'Sketchbook' now." 

N.Flying then explained how the past song suddenly came back on the music charts. They said, "A post was shared on an online community, asking people to listen to this great song, and then it suddenly landed on #97."

Unfortunately, N.Flying wasn't able to find the netizen who shared the post. N.Flying said, "We are having trouble finding him/her because it's an anonymous community," and added, "We want to offer a meal or give concert tickets so please come meet us."