Mayuko Nise  

Mayu, 二瀬 真由子

Mayuko Nise is one of the individuals who has been transported to an enigmatic skyscraper realm. Despite facing mistreatment and disregard from everyone around her, including her own parents, Mayuko exhibited ruthless behavior in this new environment, refusing to trust anyone. However, following her rescue by Yuri Honjo, Mayuko has since dedicated herself to assisting Yuri.