Meh, my mom knows about. Ripped on me when I got an OP shirt for Christmas from my grandmother.
My grandmother knows about the series and occasionally read summaries of the story, just to see why I'm so into OP and why I'm so happy every Thursday mornings. She does like the music in the anime though. (Sanji's and Robin's theme to be exact)
I just got my friends from Japan into OP. (WHAT THE FUCK?!)
They just started reading around Sept. 09 and they fell in love with it. Especially the first daughter and her father. (They said, they're at Volume 30 last night. They're about to get into the good shit.)
The mother took her two daughters to see Strong World and they nearly told me everything in the movie. (I had to scream at them, NOT to tell me anything)
Then they bought me the Strong World figures and give me Volume 0 for Christmas.
I wanted to cry… I had an OP Christmas for sure.