This is a list of extra content for Eternia Memories. Because of potential spoilers, the extra content should be viewed only after reading the volumes listed in the subheadings above the item.

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Eternia Memories 1

Rules of the Game — The rules of conduct for the Class Wars

Eternia Memories 2

Alice Protocol — The text of the peace treaty of the war between Class 3-A and Class 3-F in August 1887

Constitution Act, 1668 — The constitution of the student institutions of Korolev Senior