Aoi Kirishima

Aoi Kirishima is the elder sister of protagonist Aoto Kirishima, with a six-year age gap between the two. She studies at a university in Tokyo but once made a brief return to her hometown, taking on a student-teaching role in mathematics at Aoto's high school. Her personality is easygoing and uninhibited—she lets her guard down completely around her younger brother without a second thought. Despite her striking looks and captivating figure, she has virtually no aptitude for housekeeping, leaving her living space in a perpetual state of cheerful chaos. Once Aoto moves to Tokyo, Aoi becomes an indispensable source of support and encouragement in his new city life.