Benio Yonomori

Acting as the prestigious student council president, this elegant and high-achieving student maintains a perfect, demure reputation among her many admirers. However, her disciplined school persona vanishes behind closed doors, where she transforms into a carefree and deeply affectionate elder sister to Kobeni. This playful, immature side of her personality becomes even more apparent through her bold and persistent romantic advances toward Mashiro during their private time together.