Nise Onaga

Nise Onaga, also known as Fake Ritsu, is the daughter of Gouki Onaka and the human proxy for the machine known as Ritsu. As the real Ritsu is a machine, Nise takes her place during assemblies and exams, and Ritsu tutors her. Nise has a plump face along with a round nose and eyes which appear to stay closed. While assuming the identity of Ritsu, Nise wears the standard female Kunugigaoka outfit and takes on Ritsu's hair style.