So a friend of mine was playing Fire Emblem 1 for Famicom and apparently on Chapter 17 (the one where you retake Altea Castle from Moses), two chapters before recruiting Est. She had Catria attack an enemy Thief and somehow triggered the Triangle Attack, apparently...?
The enemy was surrounded by Palla, Abel, and the attacking Catria, but no Est.
For what it's worth, she had the translation patch applied.
Has anyone heard of this happening?
(I attached a screenshot of the aftermath, of course I don't have a cap of it happening because she was totally not ready for this.)
Edit: It looks like the image didn't attach for whatever reason. I'm trying again.