"Are you even paying attention?! You're going to face consequences for your actions. Do you have anything to say for yourself?"

Sophia Nishikinomiya is the wife of Matsukage Nishikinomiya and the mother of Anna Nishikinomiya. She is also the leader of the PTA.

Sophia has silvery-white hair, accompanied by pale blue eyes. She is always seen with her hair in a neat bun, with dressy-type clothes on.

Sophia is shown to be an educated woman, who stops at nothing to fulfill her goal. She also seems to lose her temper easily when things go south. She is also proud of Anna and loves her husband, Matsukage.

She's shown to be a formidable leader and has connections to the Japanese government.

Sophia was bron on July 19, 1987. She is 43 years old.

Sophia made a bill titled the X-Prohibition Law which, if enforced, would enact much stricter morale laws, including a new PM model which would be worn as underwear. However, on the day of voting, Tokioka's students instead went to Yatsuga Forest as part of SOX's plan to retrieve hidden porn magazines. To make matters worse, when Sophia had announced that the bill was passed, she unknowingly held a pornographic image instead of a ballot. This would be captured on national television for everyone to see, and Sophia got into trouble for the incident.

The name Sophia means "wisdom" in Greek.

Sophia's surname Nishikinomiya means "brocade, fine dress, fine clothes" honors (錦) (nishiki) and "temple, shrine, palace" (宮) (miya).

Sophia is one of 4 characters who have a unique PM shape, the others being Anna Nishikinomiya, Hyouka Fuwa, and Ayame Kajou.

Like her daughter, Anna, Sophia's PM resembles a snowflake, which represents her purity.