The title’s oxymoron functions as the OVA’s moral core. Sunflowers represent loyalty, longevity, and adoration. By forcing the sunflower to bloom without the sun, the narrative redefines resilience: it is not about thriving in ideal conditions, but about manifesting beauty because of the void. Aoi’s journey mirrors the seed. She, too, is a creature of grief—her mother’s absence is her permanent eclipse. The night-blooming sunflower becomes a vessel for unresolved love. It does not need the sun to exist; it needs the memory of the sun.