We been over this, you didn't learn.. The word used here in Japanese, Rank(Iretsu) or Grade(Iretsu) is literally the same.. Hitetsu is giving you the information and you're refusing it..
There are currently four known
"grades" (位列,
iretsu?) of Meito
- Supreme Grade Blades (Saijō Ōwazamono), of which there are 12;
- Great Grade Blades (Ōwazamono), of which there are 21;
- Skillful Grade Blades (Ryōwazamono), of which there are 50;
- Grade Blades (Wazamono), of which there is a currently unknown number.
The following is a list of blades of
unknown grade (位列不明,
iretsu fumei
Some blades (or other weapons) are confirmed to be
ungraded (位列なし,
iretsu nashi
Everytime in the Manga, where Rank or Grade Blade was mentioned it's Iretsu, there's no distinction between Rank and Grade it was just mistranslated to Rank once...