Due to typos in scanlations or because of different translators, some name problems are seen throughout the manhwa (*a big sigh of relief* that M-21 still doesn't have a proper name). Following are some examples:
- Dr. Aris...up until Chapter 150, she's called Arith; after that the name changes to Aris, and even Iris!
- Takeo is sometimes spelled Takio and later, Takeo.
- At the very beginning, we come across the term organization but later it is known to be the Union.
- Seira was first termed to be of Royard clan which also changes to Loyard later.
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