What Is An Evolutionary Arms Race?

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What Is An Evolutionary Arms Race?
Item Information
Type	Book
Origin	YGGDRASIL
Effect	Biology Book
Users	Ainz Ooal Gown Shalltear Bloodfallen
Debut Information
Manga	Oh!verlord Chapter 91

What Is An Evolutionary Arms Race? (進化的 (しんかてき) 軍拡競争 (ぐんかくきょうそう) とは何 (なに) か) is a book from YGGDRASIL.

Description

This was one of the books checked out by Ainz Ooal Gown from Ashurbanipal. It was one of the complicated titles Ainz selected to the library. He would pretend to read the book, and hide it under his pillow.

The Homunculus Maids who were on duty in serving Ainz in his room were privy to the book being present. Shalltear Bloodfallen became aware of the book, from gossip in the Canteen. Since the elder liches of the library forbid sharing of the borrowing history of its patrons, the Floor Guardians used the information from the maid to search for the book to gain a greater insight on Ainz. While searching for the book in her Book-Loving Heroine Outfit, she recruited Clavu to assist her.

Appearance

A boom with a non-descriptive front cover.

Abilities

Clavu using a dictionary to define “evolutionary arms race” reveals the book’s genre as being a biology subject.

Trivia

• The term refers to how species evolve competitively—like faster gazelles driving cheetahs to evolve greater speed—illustrating coevolution.
• The book is a decoy, as Ainz has a collection of borrowed books, most being self-help genre, that he kept hidden in his Item Box. When the general maids were not looking, he would switch the complicated book with one of his personal books to read, so as to maintain that he was an his reading material matched those of an intellectual to the NPCs.