In case you don't know what I mean by the Watson please look here; The Watson - Television Tropes & Idioms
Basically, I'm considering having a protagonist / pov character who acts as an audience surogate. She (I'm pretty sure I want it to be a she, though I'm not confident about how well I can write a first person perspective of a girl) would be a normal high school student who, after some supernatural stuff happens to her (still thinking what... maybe fairies stole something from her, or she broke an ancient thingamajig and let loose an evil curse) She goes to the local mage-for-hire in order to get rid of the supernatural weirdness. The local mage for hire happening to be one of her classmates by the way.
She starts out as a normal girl, but I'm thinking of giving her a demonic sword in a later story that she tames through pure pig-headedness.
The problem is, that I kind of feel like I loose by having to intentionally invoke a trope like The Watson.... Ugh... it'd make things easier but I dunno...
What do you guys think?