Small in stature with a pure and delicate expression, Mikka has a soft, youthful voice and a tiny nose. Contrasting with her childlike features is her long, flowing black hair that gives her a mature allure—making her undeniably attractive from any angle. Despite her innocent appearance, Mikka unconsciously enjoys her dual nature, revealing a mischievous, teasing side. Twenty-year-old Mikka has always been inseparable from her younger sister since childhood—running errands together, sleeping together, even bathing together. She adores her clumsy little sister, often saying, "You can't do anything without your big sister, you know!" As they grew older, her sister began coming to her for love advice. After Mikka lost her virginity first, her sister would listen with adorable curiosity. They shared everything, so when Mikka grilled her sister after her own first time, she discovered their sensations were surprisingly similar—their erogenous zones matched, and both of them loved sex passionately. Then one day, her sister casually mentioned, "I've been thinking about doing a filming job..." When pressed for details, she explained that a scout had approached her, and though she was hesitant, she was clearly intrigued. Mikka sensed perfect timing. She had just found out online about a filming job herself. The sisters had been saving for a trip abroad, but money was tight. After searching for ways to earn quickly, they both independently arrived at the same option: "filming" work. But Mikka couldn't bear the thought of her precious sister facing danger. Determined to protect her, Mikka resolved, "I'll try it first." Nervous at first, she was quickly put at ease by the experienced pro. Blushing, she undressed, and as soon as she was touched, her anxiety vanished. Lost in the thrill of her first pleasure, she climaxed again and again. In that moment, Mikka realized: "Something this good—my sister isn't ready for this yet."