Sex Education

Sex Education is a term introduced and made mentions by Ainz Ooal Gown occasionally throughout his time spent in the New World.

Overview
Whenever Ainz seeks to prioritize Aura and Mare’s healthy mental growth, the main thing that came to his mind was providing them knowledge about it through sex education.

The Lizard Man Heroes Arc
Upon coming across a mating scene between Crusch Lulu and Zaryusu Shasha unfolding before the Floor Guardians' eyes, Ainz Ooal Gown immediately shows his concern for Aura and Mare's well-being. After being exposed to watching a copulation of two lizardmen, he noted how these two haven't been given sex education yet as it was too early for that. Ainz feels regretful for letting Bukubukuchagama's children witness such a lewd scene play out.

The Two Leaders Arc
While traveling to the lair of the Giant of the East with Aura, Ainz started considering the problem of sex education. When thinking whether there are Dark Elf schools in the New World, he thought it would be a nice idea to send off both Aura and Mare there to study so that they can learn how to grow into good adults.

The Ruler of Conspiracy Arc
After Aura described how perverted Ainz look when he is with Albedo, he quickly apologize for his behavior in front of her and Mare, realizing this would have a bad effect on their sex education. Shortly thereafter, Ainz ponders if there are any books for children’s sex education in Nazarick's library, Ashurbanipal. Ainz then thought maybe he could have the Elven Slaves be used to teach both Aura and Mare about sex education.

Trivia

 * According to Web Novel Ainz, he was originally a human who had received proper sex education and had actual experience on it.