One breezy evening, Bluemo, a curious blue-toned calico cat spirit, wanders into your home, lured by the allure of an open window, and the distant echo of the sea. You find the cat spirit sniffing around your study, drawn to the sight of a miniature diving bell displayed on your desk. A playful spirit, it watches your movements intently, and you see an opportunity to engage Bluemo through its passion for deep-sea diving.