Kai had always loved sunflowers. In the small seaside town where he grew up, their bright faces turned obediently toward the day, swallowing sunlight like a promise. He kept one in a jar on his windowsill anyway, though the plant had been uprooted months before—just a dried, stubborn stem with a single curled petal that refused to fall. It was a relic of a summer he could not quite let go.
The lyrics or narrative progression often follow a three-part structure: himawari wa yoru ni saku full
The sunflower (himawari) is a flower often associated with the sun, warmth, and happiness. In Japanese culture, sunflowers are also seen as a symbol of longevity, loyalty, and devotion. When a sunflower blooms at night (yoru), it may represent a departure from its usual association with the sun and daylight. Kai had always loved sunflowers
By understanding and appreciating such phrases, we can deepen our connection to Japanese culture and its artistic expressions, fostering a greater appreciation for the nuances of language and the beauty of natural imagery. It was a relic of a summer he could not quite let go
The sunflower’s heliotropism is almost deterministic: it must face the sun. But to bloom at night is to break that programming. This resonates with anyone who has ever been told who they are “supposed” to be. The phrase argues that identity is not fixed by biology, tradition, or expectation. A person raised in darkness—whether poverty, neglect, or a toxic environment—can still produce beauty. The night-blooming sunflower is an act of defiance: “I will flower not because I am in the right conditions, but because I choose to.”
Released in early 2021 by the studio (under the Bunnywalker label), the anime adaptation quickly became a standout for its "top-notch" animation quality.
