What Is Rin Rule 34?

For those who don’t know, “Rin Rule 34” is a term used to describe the internet rule that states “if it exists, there is pornography of it.” The rule applies to any character or person, and has been applied to everyone from cartoon characters to historical figures. But what exactly does this have to do with Rin? Let’s take a closer look at what Rin Rule 34 is all about.

Origins of the Term

The term “Rin Rule 34” was coined in reference to the popular Japanese anime character Rin Tohsaka from Fate/stay night. In 2006, fans of the series began creating fan art and other works featuring her likeness, which eventually led to adult-themed content being created as well. As more and more adult-oriented artwork and videos featuring Rin began appearing online, some users started referring to them as “Rin Rule 34”—a reference to the infamous internet rule.

What Does It Mean?

At its core, “Rin Rule 34” is simply an extension of the original internet rule that states “if it exists, there is pornography of it.” This means that if you can think of something (or someone), chances are there is some form of pornographic material featuring it somewhere on the internet—even if that thing (or person) doesn’t actually exist in real life. In this case, because Rin Tohsaka does exist in real life (albeit as a fictional character from an anime series), her name has been used as shorthand for this particular version of the rule.


In short, “Rin Rule 34” is just another way of saying that if something (or someone) exists then there will be pornographic material involving them available online—even if they only exist in fiction. While this may seem like a silly phrase at first glance, it serves as an important reminder that anything can be sexualized on the internet—whether we like it or not! So before you search for something online, make sure you know what you’re getting into!

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