Several unpublished documents for anime works by Japanese manga legend Osamu Tezuka are in the possession of Tezuka Productions, Jiji Press learned Sunday.The materials include original drawings, storyboards and character designs created by Tezuka. They were not included in the seven-volume storyboard collection published in 1999 or any other previous publications.These animation materials will be included in a new publication to be released by Genkosha on June 17.