The character or creatures are shown like this.«Name»
The thoughts are shown like this
...thoughts...
An explanation of abbreviations are shown like this . Including Argus speaking.
[explanation of abbreviations]
Important words or quotes are shown like this
『important words or quotes 』
«▢ ▢ ▢ ▢» is read as Anonymous or some players called him as Tokumei Genzo which translated as Anonymous Phantom.
«Ǝ ♛ E» is read as the Angless or otherwise known as Tenshi kohi translated as Empress Angel
«Ǝ ♔ E» is the name of the Emperor who's a mysterious person behind CGU (Central Gaming Unit). Also read as Tenshi which is same pronunciation of Angel in Japanese but different kanji
«Ǝ ⟁ E» is the mysterious person who challenge both Anonymous and the empress live after incident in the Dungeon and read as Phantom or Genzo
(Explanation: Names are called by Japanese cause most gaming company is there in this world)
Btw the I don't own the book cover for now
If you can't understand something, I'll update here.