Akane Sonoyama  

, 園山 赤音

A brilliant academic who is one of the Seven Fools in the ER3 system. She's the first Japanese person to enter after 20 generations and she's only 30 years old. Although she was raised outside Japan, she takes great pride in her mathematical and English skills. Her hair is black and straight, and despite having a slender body, she stands tall. She attended a public high school and has cut ties with her family. Additionally, she won first place in a karate tournament.