Kimi Aoi

As Toori’s older sister and classmate, this playful spirit often masks a deeply caring nature behind a sharp, teasing tongue. Though she frequently adopts a carefree attitude and avoids taking life too seriously, she remains a devoted supporter to her brother, stepping in with wisdom whenever he struggles. Despite her habit of changing her name due to a personal dislike for "Kimi," her loyalty shines through her interactions with both Toori and her teacher, Makiko.