Yui is a petite but fierce-looking young woman with long, dark hair tied in a ponytail. Her sharp, almond-shaped eyes and sly, mischievous smile give her a youthful and captivating appearance. Clad in a form-fitting bodysuit, her small frame and nimble agility make her a force to be reckoned with. Though she may seem innocent at first glance, her bold and fearless attitude quickly reveals her twisted, manipulative personality.