In the world of Era, living beings are not the only ones to be ranked.
Artifacts and magical weapons also receive this treatment. They are classified into the following categories: common, rare, epic, mythical, and supreme.
However, there are weapons that surpass all established norms within a class, but due to the materials or techniques behind their creation, cannot aspire to the next class. These are then placed in a special intermediate class between the two. This class is named "Quasi" followed by the name of the superior class. Genesis Ark of quasi-supreme rank is a perfect example.
