Dawn operates alongside his brother Dusk as orphaned rivals-turned-allies in the urban underworld. They first seized control of Yutaka City before targeting Treasure Town for expansion, directly confronting the territory's reigning orphan duo, the Cats—Black and White. Fully aware of the Cats' formidable reputation, they pressed their takeover bid regardless. This aggression culminated in a decisive battle where the Cats overpowered and expelled them from Treasure Town.

Post-defeat, their dynamic with Black and White shifted from hostility to collaboration. They later reemerged to share vital intelligence with the Cats, specifically warning about three dangerous figures who had previously driven Dawn and Dusk from Yutaka City. This exchange signaled a pragmatic alliance or mutual respect forged through conflict.

Within the narrative, they initially expose Treasure Town's power dynamics and the Cats' dominance as street protectors. After their exile, they return as secondary figures advancing the plot by alerting the protagonists to looming external threats.