Wakana Shimazu attends the same high school as Takumi Kaizu, serving as his senior by one year. She possesses striking features: black hair typically parted in the middle and styled in a waist-length ponytail, paired with distinctive violet eyes. Her height is 165 cm, with measurements of 82-59-84 cm. Her wardrobe includes a sailor school uniform, sundress, yukata, beret, decorative belt, and knee-high socks. Renowned for her beauty and elegant demeanor, she draws significant popularity from male students. Despite this attention, she harbors romantic feelings for Takumi Kaizu, who remains unaware of her interest. Navigating school life, she is consistently accompanied by Yuno Kawakami, a second-year student who assists her with daily tasks and intervenes against persistent admirers—sometimes employing a wooden sword. Yuno addresses her with the respectful honorific "sama." Her role as an upperclassman and school idol figure remains consistent across both the original visual novel and its OVA adaptation.