She's totally a textbook idol, but something feels... missing for me. 
Word. I can totally see why Paruru's popular but for some reason she just doesn't do it for me. There's something weird about her..... 
Well, she IS a vampire after all:

but seriously, she has everything I like in an idol. In some way she's a bit like a non-sporty, more feminine Suzuka Morita... if that makes sense.
I'm actually surprised she isn't featured more. I guess girls like Ranran sorta stole her thunder. The upcoming election will be very important for her, I think she's at a make or break stage in her AKB career.