i agree that this can be the interpretation of identity/secret identy! but still the ideas of hero and villain are slowly changing here:
even if letio grew up not knowing social norms, selena has already noticed some odd behaviours/tendencies
while ignis has been proven different than just a villain role and she has noticed it even better in the late chapters (and even got a heavy conscience because he has been “too good for a villain”)
not to mention since the beginning ignis’ villain acts in the story where only made so he could survive
i think this webtoon plays well with this idea of good and bad! i can’t wait to see what happens next!!
smhw i feel like this could be a play on how letio is actually the "villain who discovered her identity" here since we're seeing some seriously unsettling behavior from him. and so it s like a reversal from who the original "good" and "bad" characters were.... or maybe i m just reading into smtg that s not there but that what i thought hahahha ╮( ̄▽ ̄)╭

okay but the name of the story is “the VILLAIN discovered my identity” 44 chapters later ignis -the so called villain of the book- still has no clue lmao on top of that, letio is showing a very twisted mindset of course our minds go tHERE ╮( ̄▽ ̄)╭
as in many isekais, they seem very different from the original story (after all they are actual people in the fl’s world now, not just plain characters) and in this sense it IS possible that letio is acting “villainish”
it just proves heroes or villains are not a set thing, it all changes with perspective