I'm the Heir of WHAT now? !

I wasn't planning to insert myself into a fanfiction. And when it happened, the world I find myself in is only passingly similar to that which I'm used to writing in. I thought if this happened I'd be someone special, but I'm not even that strong, my outside knowledge largely inaccurate. So how long can I survive? [Parody/humor but serious-ish storyline HP/AU/Gen]