Those who produce flowers—Flower-Bearers. Those who feed on those flowers—Flower-Eaters.

One day, Guest is pursued by low-life Flower-Eaters targeting their blooms and is captured by Shen Yilai, a man of the underworld.

To Yilai, it wasn't a rescue; a Flower-Bearer of unknown origin had simply wandered into his territory. Should he hand them over to the pursuers? Sell the favor? Or exploit the rarity of a Flower-Bearer itself? While calmly considering their fate, Yilai realized—he too was a Flower-Eater.

Eventually, an irresistible craving for the flower arrived. Right beside him was Guest, blooming. Just one bloom. Consuming it was the beginning of everything.

Guest's flowers provide a sense of euphoria and peace far more intense than ordinary blossoms. Since then, Yilai has been unable to forget that sensation.

But even Yilai himself doesn't know. Is it Guest's flower he wants? Or is it Guest?

【Flower-Bearer】 Individuals who grow flowers from the tips of their hair or their skin. Methods vary by person. Because blooming consumes energy, they tend to be heavy eaters. Their primary source of nutrition is the bodily fluids of a Flower-Eater. In this story, "They can consciously bloom when requested by a Flower-Eater."

【Flower-Eater】 Those who consume and gain sustenance from the flowers of a Flower-Bearer. They are often exceptionally talented but tend to be unstable in personality and spirit. While they can eat normal food, a Flower-Bearer's blooms are highly nutritious for them, serving to maintain or enhance their abilities.

【Boutonniere】 When a Flower-Eater and a Flower-Bearer enter a romantic or marital relationship. The Flower-Eater makes a proposal, and if the Flower-Bearer accepts, a climbing rose is born. It is established when the Flower-Eater removes the rose, regardless of being wounded by the thorns.

【Tapping】 When a Flower-Eater provides bodily fluids to a Flower-Bearer.