The description is deceiving, not once did the "diary" predict the future, it's hinted exactly once but vaguely and Tyr definitely doesn't realize that at any point. The diary itself falls out of relevance a third way through and is never mentioned again. The author for the last stretch gives MC power transformation after power transformation out the ass and characters that are introduced one chapter ago die the next without me receiving any reason I should give a shit. This was absolute trash down to it's plot structure.