As a BNHA fan, I have spent an inordinate amount of time trying to figure out why Mina’s skin is bright pink.
And like many other BNHA fans who rationalise everything a little too much, I am a strong believer in the “secondary mutations” quirk theory, which I’ll explain in another post, but I have also come up with a less believable but more interesting theory.
In chemistry, phenolphthalein is used as an acid indicator; meaning, it gets put in liquids to cause a colour change depending on the liquid’s pH so that scientists can tell whether or not something is acidic.
As far as you’ll learn in grade 10 chemistry (which is as far as I got before deciding I was more of an art kid), when phenolphthalein is mixed with a basic substance, it turns pink. When it’s mixed with a neutral substance, it is generally faint pink/colourless. When it is mixed with an acid, it is colourless (chemistry-speak for clear).
(Image: photos arranged in order of low pH to high pH. High pH liquid is the most pink, as explained in the paragraph above.)
How does this relate to Mina’s skin?
To determine that, it’s best to start with Mina’s acid. It’s colourless (the art style depicts it as a milky-white, but it could just as easily be clear; also, phenolphthalein doesn’t change the colour of an acid, it only changes its own colour, so yeah). Therefore, since it is acid and has a low pH, it stands to reason that it could contain phenolphthalein and still remain colourless.
Mina’s skin, on the other hand, is not acidic as far as we know . It would actually make sense for her skin to be a bit basic to counteract her quirk, so her skin still protects her from her own acid (because basic and acidic substances neutralise each other). So if her skin contained phenolphthalein, it stands to reason that her skin would have a pink-like hue. In that sense, it’s actually quite cool that her skin is pink; it implies that her quirk has an inbuilt indicator to tell her when her skin isn’t basic enough to protect her properly, and when her acid is no longer acidic. Could she also create basic substances, rather than just acid? Is that why her acid contains phenolphthalein? Who knows!
Does this theory have a shit ton of holes? Yes. Is it likely that Horikoshi made the active decision to make Mina’s skin pink to hint at a second aspect of her quirk as an indicator? Nah, he’s too misogynistic to pay close attention to a girl’s character design like that. But it’s fun to think about. Chemistry is cool.
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loved you three summers !!!
*ੈ✩‧₊˚ in which she's living her dream and he's just her biggest supporter.
or
for when you know it'll be them, forever and always. ˚ ༘♡ ⋆。˚
social media au // pierre gasly x fem!reader
warnings - language
author's note - hope u like it!! thank you so much for reading, i love you <3 requests are still open!!
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pierregasly when she's in love with you AND a phd student
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Any facts about sleeping? I’m tired and would love to hear some to help me sleep.
The quality of sleep is 100% dependent on who you sleep with:
Alone: Soundly
With A Lover: Splendidly
With Many Lovers: Systematically
With Haters: Suspiciously
With Ghosts: Supernaturally
With Bugs: Snugly
With A Machete Under The Bed: Securely
With Many Machetes In The Bed: Sanguinely
With Bacteria In A Phenolphthalein Agar Plate: Scientifically
With The Enemy General: Strategically
With A Philosopher: Sagely
With The Fishes: Swimmingly
With The Dead: Solemnly
With The Undead: Shelly
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