Sayaka Jinguuji

Sayaka Jinguuji serves as both the captain and ace pitcher of Seijō High School's girls baseball team. Driven by a desire to restore the prestige of the school her professional baseball player brother once cherished, she single-handedly rebuilt the team from near collapse. While she carries herself with dignity and impeccable manners, she has a notable weakness for provocation and can lose her cool under pressure. Despite her strict demeanor, she is genuinely nurturing—even offering guidance to players from rival schools—revealing a warm and dedicated mentor beneath her composed exterior.