- Missing Episode: A side story where Kotarou has a crush on a girl in his study class. The only indication that this side story exists is that it was mentioned by Koge-Donbo in the Writer's Talk afterword of the Pita-Ten Official Fan Book Vol. 3.
- No Export for You:
- The anime. It even has a Spanish version released in 2005 from Animax Latinamerica, but to this day, it has yet to be licensed in America. Later averted, as Nozomi Entertainment released the anime on DVD, even though it has no English dub.
- Only the first two light novels were released in English; the third one was never translated.
- Relationship Voice Actor: Yukari Tamura and Miyuki Sawashiro were together in Galaxy Angel.
Trivia / Pita-Ten