Sylvester Astragraphia is a teenage girl who is very proficient in mathematics and can also understand some psychology, Even though he is a nerd at school, he also likes sports activities such as basketball and karate. He is now 17 years old but he is already in the 12th grade of high school. She is well-known for her achievements in academics including winning the Mathematics Olympiad and also being dubbed the Queen of English at her high school.