* ActorAllusion: Creator/EriKitamura voices Remilia Scarlet, was once a vampire {{Ojou}} from ''Anime/BloodPlus''.
* AscendedFanon: In Chapter 21 of ''Wild and Horned Hermit'', a canonical ''Touhou'' work, Sakuya is shown wearing an outfit very similar to her ''Koumajou Densetsu'' appearance.
* RoleReprise: All the voice actors reprise their role in ''Koumajou Remilia: Scarlet Symphony'', the remastered version of the first game. 12 years after the release of the original ''Koumajou Densetsu II: Stranger’s Requiem''