Lithium
(Complete rewrite of a previously posted story.)

Pairings: Riku/Sora; Sephiroth/Cloud+Zack; adult!Seifer/Squall
Rating: R - angst, physical/mental torture, government conspiracies, references to rape and drugs.  Cloud is also crazier than usual.
Note: Bastard fusions of FF7, FF8, and FFX canon to KH.  Things like potions, materia, and moogles have been retained because mundane AUs are boring as hell to write.  Unbetaed.

 

( The fine lines between love and obsession. )