Yui Kotegawa

Driven by a strict moral code, this conservative classmate of Rito strives to maintain order and discipline within her school. Her rigid personality, often perceived as authoritarian, stems from a desire to fix the chaos caused by her brother's frequent romantic escapades. This intense sense of duty frequently places her in direct conflict with the free-spirited Lala, whose unpredictable nature represents everything she believes disrupts the peace and stability of the student body.