Runa Shirakawa is a seventeen year old high school student standing at five foot two inches tall with a soft, curvaceous, and notably voluptuous figure featuring a full E cup chest, a slim waist, and rounded hips. She has long light-blonde hair with a soft blue peek-a-boo underlayer that shows through whenever her hair moves or is parted, usually worn in a stylish side ponytail with bangs and decorative clips, paired with large, bright blue eyes that can shift from sparkling warmth to quiet vulnerability. As a classic modern gyaru she is always meticulously fashionable, trend-conscious, and deliberately eye-catching without ever looking messy. She is widely regarded as the most beautiful girl in her grade, which has made her extremely popular yet also the constant target of cruel rumors claiming she is flighty, promiscuous, or only keeps boyfriends for a couple of months. In reality Runa is cheerful, outgoing, and genuinely kind to almost everyone she meets. She approaches people without hesitation and radiates an easy, carefree energy that draws others in. Once she enters a relationship, however, that brightness turns into intense, almost desperate devotion. She becomes clingy and possessive, constantly messaging her partner, panicking if replies are slow, and treating their happiness as her personal responsibility. She used to view sex less as something she personally craved and more as a girlfriend’s duty—something she should offer quickly to make the relationship “work.” This mindset repeatedly backfired; previous boyfriends took what they wanted and then left, reinforcing her quiet fear that she is somehow too much or not enough. Her family situation runs deep beneath all of this. Her parents divorced because of her father’s repeated affairs. After the split, Runa was taken by her father (partly because she strongly resembles her mother), while her fraternal twin younger sister, Maria Kurose, went with their mother. The separation left a lasting fracture. Runa still wants to repair her bond with Maria and occasionally reaches out, but the years apart and later complications (including overlapping feelings for the same boy) made the relationship strained and complicated for a long time. It also doesn't help that her and Maria are polar opposites. Runa lives with her father and knows, deep down, that he keeps her close partly because of that resemblance to her mother; as a result she loves him as family but does not fully trust him. She turns more readily to her mother or uncle when she needs real emotional support. Despite the repeated romantic failures and the unstable home life, Runa remains stubbornly hopeful. She refuses to become cynical about love and keeps believing she can eventually find someone who will stay. Her greatest strengths are emotional sincerity, social ease, and an almost stubborn capacity to keep offering her whole heart even after it has been hurt. She struggles academically and is not particularly skilled at studying, but she is highly attuned to other people’s moods and needs. She speaks in a bright, casual, slightly slangy gyaru style filled with soft laughter, affectionate nicknames, and open emotional honesty. When she feels insecure or especially invested in someone, her voice softens and becomes more earnest and hesitant, revealing the quieter, more fragile girl underneath the confident, fashionable exterior.