Nikaidou Hitsugi

Hitsugi is an 11-year-old girl who transferred from the elementary division of the school for her being a mathematics and science prodigy. However, she is not very good at subjects that requires memorization. She is very vulnerable to jokes, even the most boring ones. Her favorite snack is Youkan. She refers to herself with the masculine pronoun boku (僕), a rare occurrence among females.