Board Thread:General Discussion/@comment-27621207-20160116152746/@comment-27456014-20160117045941

It probably hasn't be confirmed if that book was from Hide or if he survived in the manga because in the anime Hide died as clearly seen when Kaneki was holding Hide in his hands.

Well it could also be that Hide sent that book before the owl extermination as a gift for Kaneki but Kaneki has not  opened it yet or maybe Kaneki kept it aside.