存在しない記憶
A spoiler-filled [[Jujutsu Kaisen]] plot point (and sometimes fanmeme) that for [i]some reason[/i] has also been recently appropriated to describe imagined hypothetical familial/romantic relationships with (or between) [[Umamusume]] characters.

The implication being that they are also [spoiler]fake implanted memories. Or dreams/hallucinations.[/spoiler]
nonexistent memories (jujutsu kaisen)