Hum… can someone enlighten me ? Where do the "pana" of RinPana come from ? I've been wondering for a while now ._.
My best guess is that it's a phonetic 'adjustmen' of the 'Hana' from Hanayo, since I believe RinPana counts as a compound word, though I couldn't say why that happens. Again, I'm no expert, so this might as well be complete bullshit.