A World Only We Know

So I'm not good with summaries, but he's Uchiha Ryuu, prodigy cousin of Shisui and she's Kinnara of the Sand, pacifist twin of Gaara. Or a multi-SIOC fic with loads of angst, hint of fluff, a Gary Sue with personality issues, and a sorta Mary Sue protagonist with a chibi Gaara tag along. Not crack, I swear. Too angsty for that: (Fem&Male SI/OC) AU OCxOC, ItachixOC