Nagisa loves cock so much that she claims she can guess a man's age just by looking at his package. This cute amateur regularly compares cocks with their owners' ages and now takes the cock-age challenge: correct answers win lavish prizes, while mistakes earn her a kinky punishment. She closely studies each cock's firmness, color, shape and especially the head, even helping a soft one get hard so she can inspect it properly. Can this self-proclaimed cock expert guess their ages?