Fernand Brancott is the first prince of the Kingdom of Brancott, a character defined by his persistent and often misguided pursuit of the protagonist, Kaoru Nagase. As a member of royalty, he holds the title of crown prince, a position that grants him authority and influence which he frequently attempts to leverage in his personal endeavors.

In terms of personality, Fernand is portrayed as having significant flaws that contrast with his royal status. He is described as being selfish and childish, a "coxcomb" who forgets his place and becomes rude to others, particularly when the subject of Kaoru arises. His behavior is not merely an annoyance; it has escalated to the point of harassing Kaoru at her place of business, leading to him being physically removed from the Big Belly Bistro. This rudeness extends to an outright attempt to kidnap her, an act so egregious that it prompted other patrons to intervene on her behalf. His feelings for Kaoru are a primary driver of his actions, though the narrative suggests he has confused genuine admiration for her intelligence with romantic love. He is stubbornly convinced that he is bound to Kaoru by fate and refuses to accept her repeated, blatant rejections, including her declaration that she loathes the hollow and unfulfilling life of royalty.

Fernand's primary role in the story is as a recurring pursuer of Kaoru. He chases after her across different kingdoms, such as Jusral and Balmore, having become aware of the miracles she has performed with her potion-making abilities. He is determined to bring her back to his own kingdom, believing he can convince or force her to return with him. Kaoru, however, is not easily cornered; she consistently outwits him, employing tactics such as pretending to be her own twin sister to escape his advances, a deception he repeatedly falls for. Even when she insults him to his face, Fernand does not seem to take the criticism to heart, continuing his single-minded quest.

Key relationships include his two childhood friends, Fabio and Allan, who often accompany him on his journeys, including "courtesy visits" to other kingdoms for the purpose of finding Kaoru. His relationship with Kaoru is the central dynamic of his character arc, which is less about growth and more about an obsessive stasis that has consequences. The narrative indicates that his unyielding fixation on a "wild goose chase" is ultimately futile and will lead to him being forced into an arranged marriage or being replaced as heir to the crown by another relative. In terms of notable abilities, the character does not demonstrate any special powers or combat skills; his primary attributes are his royal authority and his relentless, if ineffective, persistence.