Yoshinoya Sensei is a quirky and energetic homeroom teacher at Yamabuki Art High School in the anime series Hidamari Sketch. Known for her youthful appearance and eccentric behavior, she often disregards typical teacher-student boundaries, much to the amusement and exasperation of her students and colleagues. Despite her childish antics and obsession with cosplay, Yoshinoya genuinely cares for her students’ well-being and artistic growth, providing both comic relief and occasional heartfelt support throughout the series.