- Anime First: Though technically a manga adaptation was released before the anime (but it is based on the anime).
- Creator Killer: Series director Yamakan stated that if the series isn't a major success, he would retire. While the series isn't bad per se, it had the misfortune of airing at the same time as a goliath known as Puella Magi Madoka Magica. The 2011 Sendai Earthquake and Tsunami didn't help matters either.
- Hey, It's That Voice!:
- No Export for You: ... For a few days.
- Playing Against Type: Nessa's seiyuu Kana Hanazawa is often known for voicing quiet or soft-spoken and shy characters.