In such a society, the story centers on Sumire, a girl belonging to an opera company, and Neo Kato, a student in the privileged class student.
Uesaka portrays the three main characters all by herself: Big Mother Maria, Sumire, and Neo Kato.
The video’s story is set in a future city “Neo Tokyo” where an artificial intelligence “Big Mother Maria” created by its privileged class members takes a full control.