- Everyone Is Jesus in Purgatory: At least one excellent example.
- Heartwarming Moments:
- The fairies spend the entire month of August trying to swim in human-sized bodies of water and are thwarted each time. Sensai-san and Tama-chan help them find other fun things to do, and at the very end give them a fairy-size pool of water to have fun in.
- The fairies caring for Hananan the flower is adorable, as is the part near the end when they decide to let her spread her seeds.
- Les Yay: Except the fairies are all too naive to notice. Tense romantic/sexual situations have been instantly resolved by their realizing they haven't a ruddy clue what's actually going on anyway, then getting distracted by something else entirely.
- Tastes Like Diabetes: Even the people who like it admit that it's literally condensed cuteness. It's been known to be used as a benchmark for loving cute things — if you can't stand it, you're a poser.
- What Do You Mean, It's for Kids?: It's rated for all-ages and marketed as a children's series outside Japan, but has some radar-dodging moments, including an interrupted Seppuku fantasy and Hororo's "I'm your Valentine gift" bit.
- Widget Series: The frequent Imagine Spots, cute characters, and slice-of-life story make it unusual.
YMMV / Bottle Fairy