Yokorenbo Immoral Mother Link -

Next, "immoral mother link." This is a bit confusing. "Mother" could refer to the "Mother" series of games by Nintendo, like "Earthbound" or "Mother 3." The term "immoral" might relate to the game's themes, but I'm not sure. Alternatively, maybe it's about the mother's morality in a story context. Or perhaps "immoral mother link" is part of a title or a specific concept.