- Actor Allusion: In episode 20, Fay jokes about how Ioryogi sounds exactly like Kurogane.
- Relationship Voice Actor: Daisuke Namikawa and Tetsu Inada, anyone? Previously the voice actors of the fangirls' beloved Fay and Kurogane, now they come back as Ginsei and Ioryogi! Squee!
- Talking to Himself: Tetsu Inada voiced Ioryogi and Kurogane who appeared in episode 20. Hilarity Ensures when both characters meet each other face-to-face.
Trivia / Kobato.