I haven't seen any in anyone's galleries either. 
Which is odd since the cels probably aren't 
incredibly rare (they showed the frogs a lot in 
the episode!) and they wouldn't be considered
A-quality cels of the characters either. . . So 
where are they all? o_0;

At least, in the last bulk lot of Narumon cels I 
bought, there was a massively nice surprise. . . 
A cel of Ruka showing her birthday on the 
chalkboard! Those birthday cels are another group 
I like from Narumon and the one of Ruka I just 
got is the first one I've seen anywhere. ^_^

But I was hoping for frog cels. ^_^;

Many Sharp Smiles,
--Drac