https://www.fanfiction.net/s/9915682/1/The-Last-Christmas
Rational!Munchkin!Santa meets neutral!genie!elves.
Reading through Worm, an original novel posted in serial form over about two years, after Eliezer's fervent recommendation in the HPMOR author's notes. It's a single novel of about 1,750,000 words. And it's brilliant. It's the story of a world with superheroes, with a teenage girl as the viewpoint character. Tropes reminiscent of Miracleman.
The recommendation may have been from here originally but I can't find it now:
It's been recommended multiply times on LW and in the HPMoR author notes, but is worth re-recommending, particularly since you gave and above average summary. Also, the author lists Old Man's War as a significant inspiration, but has said elsewhere that he just took a few specific ideas and didn't actually like Old Man's War overall.
This is the monthly thread for posting media of various types that you've found that you enjoy. Post what you're reading, listening to, watching, and your opinion of it. Post recommendations to blogs. Post whatever media you feel like discussing! To see previous recommendations, check out the older threads.
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