Windy, a sound-forged Otoppe from a world where such entities coexist alongside humans, navigates an unexpected transformation in the film: becoming a guardian to Lilu, a younger Otoppe mirroring his physical form. This shift redefines his existence, pivoting from solitary independence to the complexities of parenthood. Their bond anchors the narrative, weaving themes of growth and unconventional family ties against the backdrop of their auditory-driven reality. Rooted in Otoppe lore, Windy’s essence as a being composed of resonant frequencies underscores his role, though his past remains uncharted—the story prioritizes his present struggles and triumphs in guiding Lilu, leaving his origins as enigmatic as the soundscapes that birthed him.