Kenyu suffers from a degenerative eye disease that threatens to ruin his career as a soccer player. This disease is called bilateral retinopathy. The retina is the part of the eye that captures light and sends signals to the brain to form images. When it is damaged, vision becomes blurry, blind spots appear, or it can even lead to blindness. In Yukimiya's case, his retinopathy affects both eyes and is progressive, meaning his vision will deteriorate over time. Kenyu plays for Bastard München.