[All] Sungjin's solo song keeps repeating endlessly

Have you heard the song Check Pattern?

They say it's a song co-composed with Jaejae.

This song is about human life and the love experienced in life, compared to a check pattern.

When I first heard the song, I liked it so much that I even looked up the song's interpretation againㅠㅠ

I think this song fits Sungjin's voice very well.