https://www.tumblr.com/confession-of-the-heart-fm/824429152604225536/yeah-okay-can-we-talk-about-the-upside-down
Ooh, I know this one! Buckle up, this gets a bit long.
As with plenty of other things, the answer to âwhatâs up with Axelâs tear marks, anyway?â got a bit lost in translation. Itâs made much more explicit exactly what the upside-down tears are, and where they came from, in the Japanese script of KH3. In English, the line SaĂŻx gives Lea is âAlways told you theyâd stop you from crying, those upside-down tearsâ. In Japanese, itâs spelled out a lot more directly: SaĂŻx says to Axel that he âtaught your crybaby self that spell which stops you from cryingâthose upside-down tear marksâ.
(Yes, he does just flat-out call Lea a âcrybabyâ in Japanese. Itâs cute. If it werenât for KH being E10+, Iâd have said itâs more like SaĂŻx says that he âtaught your crybaby ass that spellâ because thatâs really more of the energy he says it with.)
Before anyone jumps to saying the English version is mistranslated, I wouldnât go that farâI get the sense that the English dialogue was written to sound more like a natural conversation between old friends and less like exposition for the audience, so it relies more on inference between the characters on information they would both already know. Its meaning still largely captures the same idea in English, it just leaves out the nuance that SaĂŻx is the one who âtaughtâ the marks to him.
Anyhow, when SaĂŻx says itâs a âspellâ, in Japanese, I want to be very clear that what he means is the upside-down tear marks were a type of magic protection cast on Axelâthe same type of âlucky charmâ that is cast when two people feed one another paopu fruit. The reason this is so clear is because the Japanese word SaĂŻx uses to describe the tears has no other nuance than âspell, charm, enchantmentâ, etc. The way the paopu fruit sharing and the tear marks are referred to in Japanese is unique among the âlucky charmsâ of the series, as they are the only two things that are referred to as âmagic spellsâ (as opposed to simply being items that you carry around with you for luck).
Since SaĂŻx attributes it to himself, the spell was likely either directly cast upon Lea/Axel by Isa/SaĂŻx, or he taught him how to cast it upon himself. And, because we know from this remark the marks are a spell that had to have been cast by a specific person, this means that itâs highly unlikely they simply appeared on Axelâs face when he became a Nobody.
So if it was a spell, what did it actually do? Well, it did exactly what SaĂŻx says it did: it âstops you from cryingâ. The Character Files book supports this, as it reiterates multiple times that the reason Lea is so sensitive and tearful all the time post-recompletion is because the marks are gone:
Lately, Iâd been just a bit of a crybaby. Could it be because the upside-down tears had disappeared from my face?â
âYou used to be a crybaby. Before I knew it, the marks under your eyes that stopped you from crying disappeared, and you began to make friends other than me and laughed with them.â
âIn the end, youâre still a crybaby, but you donât need those upside-down tear marks anymore. Just like you donât need me anymore.â
This suggests that the magical function of the upside-down tear marks was to make Axel unable to cry.
Because of this, we can infer the reason the tears vanished when he recompleted as a human is that at the end of his life, Axel finally did cry. (During the scene where he says goodbye to Roxas.) This was a sign that the tears were no longer needed to protect him, and thus the spell was broken. Thatâs why SaĂŻx makes that comment teasing Lea about looking like he needs the tears again when he seems sad, and how Lea himself talks about the tears as though heâs âoutgrownâ them and doesnât need them anymore. (You can make your own guesses as to why a spell that prevents crying was something Lea/Axel needed in the past to protect him in the first place.)
The scene in DDD where Lea wakes up in the lab can be somewhat misleading for this reason. He concluded he was human again because he connected the dots and realized that the spell was broken as a consequence of his return to humanity. So, although their vanishing was symbolic of thatâof his emotions finally returning to him in fullâitâs actually not the case that the tears were necessarily some kind of physical mark he gained upon becoming a Nobody. They have a separate origin!
All this to say: Axelâs tears vanishing actually donât suggest that physical markings (such as scars) gained as a Nobody vanish when they recomplete! The tears are their own thing. Go crazy with your Nobody scar headcanons, canon supports it! SaĂŻx for example could easily have been scarred after he lost his heart, and retains the scar after recompleting either way.
I think itâs probable that these things will be spelled out further whenever the next entries expand on Lea and Isaâs backstory, since Nomura has indicated before that he intends to go into that at some point.
-- SaĂŻxâs defense attorney (currently working other cases)