Florent, also known as Serge Flora in other iterations, is the Crown Prince of the Flower Star. He arrives on Earth incognito, posing as a traveling photographer documenting locations while secretly guiding and protecting the main protagonist during her quest. As part of this role, he strategically distributes packets of flower seeds to individuals she aids; each seed type embodies a specific life lesson tied to the "language of flowers," exemplified by gifting thistles to symbolize independence.

He maintains a discreet yet unwavering presence throughout her journey, frequently leaping into action during critical moments of peril. This includes rescuing her from antagonistic threats or hazardous natural circumstances. A tender romantic connection blossoms between them, conveyed through repeated acts of kindness and protective support. His true identity as the Flower Star prince is unveiled late in the narrative. Following the protagonist's refusal of his marriage proposal—due to her commitment to Earth—he relinquishes his throne permanently to his younger brother, choosing to remain on Earth with her.

His actions prove pivotal to the quest's conclusion: the flower seeds he distributed to those helped are ultimately sent to her grandparents' garden, where they cultivate the legendary Seven Color Flower. In one significant event, he intervenes spiritually after a near-fatal accident, facilitating her revival and providing a crucial magical item upgrade. The character appears in the *Hello Cherry Country* OVA.