percy,
this is it. this is the last letter i'll ever write. these are my last words. these are my last wishes.
i asked you when you were last happy. i have a mission for you. find someone, or something, that makes you happy again. i want to see your smile. because that makes me smile too.
take care of drew. she deserves a lot more than she has. you might think she's a spoiled rich kid, but there's so much more to her. she's broken, just like everyone else.
and most importantly, take care of yourself.
see you in the underworld.
— serena.