The Treasure Ship print traces back to boat images used to cast off bad dreams, circulated through urban and temple–shrine annual events. By the early modern period, designs commonly featured the Seven Lucky Gods and heaps of treasures, with auspicious characters on the sail to amplify good omens. Appending a palindrome verse tied it closely to first-dream traditions, preserving the logic of keeping a good dream and consigning a bad one to the river. While designs vary by region and publisher, the print uniquely combines two layers of meaning: inviting fortune and transferring or dispelling impurity. Folklorically, it links to New Year’s purification from year’s end through the first week, backed by its spread as an urban print commodity, ties to temple and shrine origin tales, and the vogue for Seven Lucky Gods as playful stand-ins.