How do you marry Harvest Goddess Mineral Town?

Excuse me, could you please elaborate on the process of "marrying" in the context of Harvest Goddess Mineral Town? Is this a feature within a game or a reference to a specific virtual economy? If it's related to a game, are there specific requirements or steps one needs to follow in order to achieve this? Is it a form of partnership, a reward system, or simply a term used for a specific in-game event? Clarifying these details would greatly help in understanding your question.