Mari Kurosawa

As Yuichi Kurosawa's older sister, Mari possesses a bold and somewhat willful personality, often using her status as his elder sibling to tease him. Her striking appearance earns her widespread popularity among both men and women. When she first appeared, her close interactions with Kurosawa led Adachi to mistakenly believe she was his girlfriend. Despite her teasing nature, she genuinely cares for her younger brother, and her sharp perceptiveness makes her a key figure in supporting the relationship between Kurosawa and Adachi.