Based strictly on the provided details, Yoshitaka Ōishi appears in "Sakura Kakumei ~Hana Saku Otome-tachi~" media as a male character. He is dispatched by former Imperial Combat Revue member Nadeshiko Sakura to retrieve her daughter, Shino Sakura, from Aogashima. During this mission, he faces interference from Prana Tosei of the Great Imperial Combat Revue B.L.A.C.K. Yoshitaka escapes this encounter using a Kobu mechanized combat unit while en route to the island. He possesses a unique ability referred to as "special eyes," though this power proves insufficient against the threatening demons. His dialogue includes referring to Prana Tosei with the "-kun" honorific, suggesting a potential prior association with B.L.A.C.K., the specifics of which remain unspecified.

In the mobile game "Sakura Revolution: Hana Saku Otome-tachi," Yoshitaka Ōishi served as the default name assigned to the player character, known as the commander, if the tutorial remained unplayed before the game's service termination on July 20, 2021. This naming convention persisted in the limited-functionality version of the game available post-shutdown.