Report
Journals are recurring mechanisms in the Kingdom Hearts series. While Kingdom Hearts, Kingdom Hearts II and Kingdom Hearts Chain of Memories (not including Reverse/Rebirth), has Jiminy's Journal, Kingdom Hearts Birth by Sleep, Reverse/Rebirth, Kingdom Hearts 358/2 Days and Kingdom Hearts Re:coded has various different books in which data, about different characters, enemies and encounters and more, is recorded.
Contents
The content of Journals slightly differs between games and the name of Journals also changes throughout the series.
Kingdom Hearts Birth by Sleep
In Kingdom Hearts Birth by Sleep, Aqua, Ventus and Terra hold their own individual Journals to record events. The Trinity Archives holds additional data covering all three stories.
Reverse/ Rebirth
In Reverse/Rebirth, Riku uses the D-Reports ('D' standing for 'Darkness') to record data.