backstory
cover story
cover-up
write out
pseudohistory
false memory syndrome
legend
blow someone's cover
antihistory
regress
unhistory
negationist
dissemble
live a lie
song and dance
change one's story
race mixer
memory lane
stalking-horse
pretext
historical
victimage
gaslight
work of fiction
chronicle
effigy
previous
show one's cards
story
facticide
history
mind game
former
late
account
bamboozle
play false
lead by the nose
euhemerization
keep one's cards close to one's chest
Freudian slip
traveller's tale
win one for the Gipper
embroidery
hoodwink
snow
pull the wool over someone's eyes
live in the shadow of
misremembrance
misdirection
depersonalize
misimagine
reminisce
show one's true colors
proverb
fictive
retrospection
caricature
bring back
bury
retrospective memory
bad faith
mis-history
historicalization
negationism
apocryphiar
pseudolife
fabricatory
anecdote
tall tale
psychomanipulation
pseudobiographical
fiction
fish story
denial is not a river in Egypt
misforecast
misframing
fugue state
put one past
memorate
fairy tale
fairytale
postmemory
deception
elude
introspection illusion
slip someone's mind
fairy story
cock-and-bull story
anonymization
divulgence
counternarrative
confusion
ye olde
divulgement
to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.