Translation guide
How to say that something is a true story or based on real events in Japanese.
It's a true story.
This is a true story.
Literally 'a true story'. Slightly more conversational than 実話.
Is that a true story?
Means 'based on a true story', often used for movies or books.
This movie is based on a true story.
To indicate that a work of fiction is inspired by real events.
To use 'true story' as a standalone title or caption.
実話 is a noun meaning 'true story' and is slightly more formal or literary. 本当の話 is more conversational and literally means 'a real story'. Both are common, but 実話 is the standard translation for 'true story' in media contexts.