Man, at least try to beat the game before returning it. That would definitely seem doable in 2 days, since you're pretty close to the end.
And Menji as a heads up, if you haven't done it already, be sure to do Fredric's Handkerchief request before beating the game, that's the only missable request in the entire game. Missing that request means no hidden boss fight, which means no trophy for you.
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SuperNiceDog smelled us all later.