From Blue to Indego

Little Lamd's fourth single is a 90s-style love ballad.
The acoustic arrangement tells the story of the protagonist, "Ao," reflecting on his feelings for his lover, "Ai."
The lyrics are a quote from the Chinese proverb, "Ai comes from Ao, but is bluer than Ao."
The two create music together, and before long, Ao becomes like Ai.