Mirai Shishiou

As the devoted younger sister of Tsukasa, this young girl carries a tragic past marked by a clinical diagnosis of brain death. Before the global petrification event, her survival depended entirely on expensive life support, prompting Tsukasa to endure grueling MMA battles to fund her ongoing medical care. Though her physical form appears twelve, her mental state remains much younger, reflecting the heartbreaking circumstances of her pre-petrification illness.