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jormis29
Since: Mar, 2012
RocketDude
Since: May, 2009

There was a book (a sci-fi one, IIRC) I read long ago. I remember it must have been like the second book of a trilogy, possibly, since the story references events that must have happened prior to the story itself. It takes place on an island or something similar (might have been Nuku Hiva) where the protag and a woman (his lover, perhaps) have been living on after something like a competition or else.
Anyways, they've been living peacefully on the island until an aircraft comes to drop off twin redheaded kids. I think they were genetically engineered or something. One gets called Brig, while the other's name I forget. The former is more impulsive and such, while the other's more gentle, maybe? Anyways, the protag starts teaching them how to live on the island and how to hunt and find food and swim, while Brig gets more clingy and jealous. Did I mention the kids are also kinda precocious?
There's a reference to Typee, there's a doctor who's sterile, the protag helps a cow give birth, there might be usage of the twin-connection trope, there's a discussion about something to do with zygotes (in-vitro fertilization? The twins might have been artificially conceived or whatever), and I think Brig kills a boar for its tusks (maybe multiple times, even).
Eventually, Brig becomes an antagonist, and I honestly don't remember how the book ends.
I do also remember that the book cover I had used this design that consisted of a black background, a red bottom border, and two redhead kids positioned in such a way that each one is cut off vertically, a half of each face on opposite sides, one smiling and one not. I think "Brigand" might be in the title, but I'm unsure.