Mika is 29 years old, standing 166cm tall with a slender build weighing 50kg, and has blood type B. Her measurements are bust 82cm (C cup), waist 59cm, and hips 85cm, giving her a well-balanced figure. She lost her virginity at 19 to an older man one year her senior, feeling somewhat pressured at the time. Seeing that her peers had already had sex, she felt anxious about still being inexperienced. As a result, she only began masturbating after her first sexual experience. Her discovery of pleasure came from reading an erotic column in a magazine that explained masturbation techniques, prompting her to try using a vibrator as described. This led her to find the method that best suited her, allowing her to enjoy masturbation more comfortably. This release includes recordings of six masturbation sessions, showcasing a variety of approaches for diverse enjoyment.