Sora had a heartless but he got his heart back.oh and how kairi got a nobody and not a heartless and a nobody is because kairi's heart is pure so a good not a bad like orginization 13 was created when that happened
not exactly that... its not like the org XIII is like that because they are bad... they just have a STRONG heart...dosent matter if its good or bad...its strong... and the thing about kairi... it's like an SUPER exaption(dont now how to spell it)... think...even sora has darkness in his heart(he had a nobody) and its sora, his like a virgen...of so pure... its just that kairi is like aerith, she is light...and them, whem her world was destroied she "migrated" to sora's heart.... okay... just read the SECRET ANSEM REPORTS...