Yui Saikawa

At just 14 years old, Yui Saikawa leads a double life as a chart-topping national idol and the authoritative head of the ultra-wealthy Saikawa family. Concealed beneath her signature eyepatch lies a prosthetic eye known as the 'Miracle Sapphire,' granting her extraordinary X-ray vision. Her bond with Kimizuka began when she hired him to safeguard a precious family heirloom, and after navigating a treacherous web of familial conspiracy, she forged lasting ties with the group. Leveraging her immense fortune and vast network of resources, she serves as the indispensable logistical backbone for the protagonists in their battle against the shadowy organization SPES.