The song "Gone" by Rosie from Blackpink would fit after Justyce and Melo broke up. It would go in the story right after the moment of their separation, capturing the emotions and feelings of heartbreak and loss. This song applies to this particular part of the story as it expresses the emptiness and longing that come with a breakup. The lyrics convey a sense of sadness and acceptance of a relationship that has ended.
The lyrics, "Now I realize, I saw the light on the ceiling, Whining, disbelieving, I must be seeing things" showcase the disbelief and shock that come with the realization that a relationship has come to an end. The lyrics, "I thought you'd disappear with all the others, But you stayed" reflect the mixed emotions of wanting someone to leave but also wanting them to stay.
Overall, "Gone" by Rosie from Blackpink captures the raw emotions of a breakup and would add depth to the aftermath of Justyce and Melo's relationship ending in the story.