Yamaiko

Yamaiko (やまいこ) is one of the three female guild member of Ainz Ooal Gown and regarded as one of the 41 Supreme Beings by the NPCs of the Great Tomb of Nazarick.

Momonga
Back then in YGGDRASIL, they used to chat about private topics. However, due to the passage of time, Momonga seems to have forgotten a lot about it, which is something he regrets. Every once in a while, when trying to teach the guardians, Momonga wonders what Yamaiko would do in such a situation, showing he still respects her skills as a teacher.

Akemi
Akemi is Yamaiko's younger sister.

Yuri Alpha
Yamaiko is Yuri Alpha's creator.