Aoi Asuni

Although Aoi and her younger brother are technically step-siblings, neither of them has ever thought much about the distinction. Having lived together since middle school, they grew up side by side and became each other's closest family. Being only about a year apart in age, they often feel more like lifelong companions than a typical older sister and younger brother. Aoi constantly fusses over him, reminding him to eat, sleep, and keep his room clean, while he patiently helps her through her endless clumsy mishaps. They spend most of their time together at home, sharing chores, meals, and quiet evenings in their apartment. Over the years, their bond has grown into one built on trust, familiarity, and the understanding that no matter what challenges come their way, they will always have each other's backs.