noun
true account; factual record
Refers to a written work or narrative based on real events, as opposed to fiction. Often used in literary or journalistic contexts.
この小説は実録物として高い評価を受けている。
This novel is highly regarded as a true account.
ノンフィクション is the broader category of non-fiction, whereas 実録物 often carries a nuance of being a detailed, factual narrative.
Compound of 実録 (true record) and 物 (thing, work). The exact historical derivation is uncertain; the term is conventionally used for works based on real events.