Wait, I remember "fairy tales" as a euphamism for (what I assume is) sex in Iono the Fanatics. Is that a thing? It confused me there, but seems to make more sense in this light.
courtesy of Data_Score, the original comment was in the doujin of these two that was just recently released:
"All the references to happiness come from a monologue Otoha has around episode 15 where she keeps thinking about how happy she wants Bell to be. Also Märchen means "fairy tale like", it's one of Otoha's catchphrases." http://dynasty-scans.com/forum/topics/5509-nerve-discussion
NanoFate! sweet! oh I also found an interesting official art: is Fate + Tux + Nanoha + wedding dress +princess carry, its adorable its a cover(I can't read kanji) it'll probably show up here sooner or later so I won't bother with links.