What does the protagonist in the scary grandma look like?

Xia Shu Shimizu, the protagonist in "Granny Terror", is an ordinary high school student. She usually wears a school uniform and looks plain. Frightened Grandma is a cartoon created by Japanese cartoonist Kotomi Aoki. The story revolves around a high school student named Shimizu Xia Shu. One summer, he met an ordinary-looking grandmother, but this grandmother was actually a horrible killer. In the cartoon, Shimizu Xia Shu is an ordinary high school student. He usually wears a school uniform and looks plain.