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The Japanese title for "The Quintessential Quintuplets 2nd season" is
_5-toubun no Hanayome ∬_. I assume "∬" to be number 2 or "II". But this symbol
looks more like the [Integral
symbol](https://en.wikipedia.org/wiki/Integral_symbol) or "Double Integral" to
be precise. This symbol is used in mathematics and is never stylized to show
numbers or anything. So, is this symbol anywhere present in Japanese script?
Or is it just a cursive way of writing "II" that ended up looking like
integrals?

[![enter image description
here](https://i.stack.imgur.com/mLeht.jpg)](https://i.stack.imgur.com/mLeht.jpg)


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question
japanese-language symbolism the-quintessential-quintuplets
What is this symbol called which is used to denote "II" in the second season of "The Quintessential Quintuplets"?


No, you're right, that is absolutely the double integral sign. There's a trend
of indicating follow-on seasons of shows with indicators like random
punctuation marks or letters (see, e.g. [this question about
_Nisekoi:_](https://anime.stackexchange.com/questions/46338/what-is-meaning-
of-colon-in-nisekoi-second-season-name/) or [this one about _Dragon Ball
Z_](https://anime.stackexchange.com/questions/52744/english-letters-in-anime-
titles)), and this is almost normal by comparison since it does actually look
a bit like a stylised II rather than, for example, adding an apostrophe or a
random letter.

It's also vaguely relevant to the show itself - since Uesugi was brought on to
tutor the five girls in subjects such as mathematics, which potentially
includes a little bit of calculus.


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