From Wiki: A triptych (from the Greek tri- "three" + ptychē "fold") is a work of art (usually a panel painting) which is divided into three sections, or three carved panels which are hinged together. The whole is intended to be greater than the sum of the parts.
This piece is part 1 of 3? Older-like Sora, in sort of formal-like gear.
Feels a bit like a knight? A lord?
(Ignore his weird left shoulder. ;-; )
His clothing was designed for a fic idea a friend had, where Kairi returns to Hollow Bastian/Radiant Garden since it's her home world (and think! Being the FF world, she could have starred in her very own Final Fantasy game!) and of course Sora and Riku could go too. In Disney tradition, they'd all be knighted. Or crowned. Or something really important and full of pompus ceremony.