Based solely on available details from the original "Doukyuusei" visual novel or related character databases, Yoshiko Serizawa is a 25-year-old homeroom teacher at Sakimake Academy. She possesses long brown hair, brown eyes, stands 164 cm tall, and has measurements of 85-60-87 cm. Her typical professional attire includes a blouse, skirt suit, glasses, and garter belt stockings. Yoshiko exhibits a serious personality and demonstrates strong dedication to her teaching role. Her primary responsibility involves guiding students on life direction and career choices. She perceives the protagonist as irresponsible and lacking resolve, expressing particular concern for this student's future, while maintaining genuine care for the well-being of all her students.