“How Into Ninjas Are You?”

In working with a client today, we had the usual objectives: "let people know about this new release and feed exclusive high-resolution resources to people who are already fanatics" -- however, I couldn't help but notice that one of our listed objectives was as follows:

-Renew interest in ninjas.

Sure, the title I'm supposed to promote is ninja-based... but when does interest in ninjas ever die? How does one ever stop being interested in ninjas? And how am I supposed to activate a community that is into ninjas? What kind of email would that look like?

ex.: "Just in case you didn't know, ninjas are still out there. And they'd like your support."

And in what other work environment is this really a desired result?

My job rules... but sometimes, it's weird.