announced on his Twitter account that he will be hospitalized again to undergo another surgery. He apologized that it's become impossible to release the new volume of Zero no Tsukaima
novel at the beginning of next year. He has been struggling against cancer since July 2011.
Source: Yamaguchi's Tweet
Novel Author of Zero no Tsukaima Suffering From Terminal Cancer
Yamaguchi Noboru Continues to Write Zero no Tsukaima While Under Treatment For Cancer