In Cutey Honey Flash, Danbei appears as the principal of St. Chapel Academy, the school attended by the protagonist Honey Kisaragi. This version of the character is a reimagining that separates him from the Hayami family lineage seen in other series, and he has no familial connection to the character Seiji Hayami in this iteration. In terms of background, he is an older man in his fifties with a distinctive appearance, characterized by a small stature, wrinkled skin, and notably long, thin eyebrows. He is typically seen dressed in a traditional kimono. His personal history is directly tied to Honey's family, as he was a college acquaintance of her father, the scientist Takeshi Kisaragi.

Personality-wise, Danbei is portrayed as mild-mannered and reasonable, a departure from some of his more boisterous counterparts in the franchise. He lacks the perverse tendencies often associated with other versions of the character and instead presents a calmer, more paternal demeanor. He is shown to be understanding and supportive, particularly towards Honey, whom he often gently defends against the strictness of another faculty member, Miharu Tsuneni. His knowledge of Honey's late father informs his protective and kindly attitude towards her. However, his character does possess a notable flaw: he finds it nearly impossible to refuse the requests of his older sister, Alphonse, showing a clear favoritism that permits her to act with considerable freedom on the school campus.

Regarding motivations and role in the story, Danbei acts as a quiet but important ally to Honey. Rather than being a front-line combatant, his primary function is to use his authority as school principal to provide a safe and discreet environment for Honey, supporting her mission against the Panther Claw organization. He offers counsel and a listening ear, often speaking with Honey about her father or about other matters concerning the school and her safety. His key relationships are therefore central to his role; he is a trusted confidant to Honey, a former friend of her late father, and a man who struggles to maintain authority over his own overbearing sister.

In terms of development, Danbei in Cutey Honey Flash is a relatively static character. Unlike other iterations that undergo dramatic transformations, such as becoming a cyborg, this version remains a steady, supportive figure throughout the series. His position is well-defined from the start, and his development is subtle, primarily revolving around his consistent reliability as an adult figure in Honey's life. As for notable abilities, Danbei does not possess any superhuman powers or advanced combat skills in this specific series. His strength lies in his institutional authority, his wisdom, and the sanctuary he provides at the academy, rather than in physical prowess.