Saia Aiuchi (愛内 彩愛 Aiuchi Saia?) teaches class 1-9 in First Shibuya High School in the Seraph of the End: Guren Ichinose: Catastrophe at Sixteen light novels.
As a standard member of the Order of the Imperial Demons, she practically worships the Hīragi Clan and scorns the Ichinose Clan. Even as a teacher, she disregards fairness and equality and mocks Guren starting as soon as class begins.
Events of 2012
Due him being apart of the respected Goshi Clan, Saia is very honored to have him as a student.
Similar to Norito, Saia is extremely pleased to have him as a student in her class, even more so as he is a Hīragi. She gushes about how amazing he is on the first day of school to the class.
A shogi buff.