You do know the ninja call their planet Earth, right?
So, I’m writing a story where the Voltron: Legendary Defender characters landed on the world of Naruto. I’m thinking the writer was trying to correct me on what they perceive as a mistake.
First, let’s start off with the fact there is a reason we call our planet Earth. At least, that’s what we call the planet in the English language. Other languages use some form of Terra for the name. In Japan, the word is Chikyu. All of these words mean earth, or land. Planets often have their name derived from the people who live there, or the word in a given language which means Earth.
Second, the characters don’t really call their planet Earth, as they don’t speak English but Japanese instead. Sure, in the English version they speak English and they call the planet Earth, but there again, they’re speaking English and not Japanese. In this world, they supposedly had no contact with the western world, so why would they call their planet Earth? Now, I’m not familiar with the words used in the Japanese version, so if Kishimoto used Earth instead of his own language, it’s something I’d chalk up to another one of the things he didn’t think through.
Third, this is an AU where the characters of Naruto aren’t on Earth. However, their culture derives from Earth culture, and they think the planet they originated on is their home planet. I mentioned taking inspiration from Stargate, where people of Earth were relocated, but thought the planet they were on was actually Earth. However, this isn’t a trope which shows up in just Stargate, where the people and culture are displaced like this.
The main point is, this isn’t a mistake on my part. I actually thought it out quite a bit.