THE PROOF IS THE MANGA OR ANIME ITSELF. UNTIL MANGA OR ANIME ADDRESSED NOVEL'S CONTENT, NON CONFIRMED NOVELS AREN'T CANON. EXAMPLE: SAKURA HIDEN, SASUKE RETSUDEN.
SIMPLE AS THAT
KISHI STATEMENT MEANS NOTHING. LET THE MANGA/ANIME DO THE JOB ON CANONITY APPROVING.
SINCE WHEN SUPERVISED AND...