Vincent Clemencia Daquitaine serves on the Torus Convent's inquiry committee, an entity operating outside the student council hierarchy. His role involves formal investigations and oversight within the convent's political and social environment. He launches the investigation into Roselitte's death during the convent festival, officially approaching Firiel as part of this inquiry.

As a member of the noble Clemencia family lineage, Vincent holds a place within the kingdom's intricate noble circles. During the Roselitte investigation, he shows sharp insight by connecting Firiel to Adale Roland, leveraging his awareness of Adale's activities as a writer of fictional narratives to suggest covert noble connections.

Beyond the main narrative, Vincent features in supplemental material. A Gaiden manga volume details an adventure he shares with Adale Roland, occurring while Firiel journeys south. This side story further explores his relationship with Adale and his activities within noble circles. His documented role centers on his investigative function at the convent and his connections to other nobles.