During the second season of the anime, King Endymion sent nightmares to his past self, which caused Mamoru to break up with (and act cold towards) Usagi in order to prevent her from being killed as was depicted in his dreams. This was, however, not the King's intent; he wanted Mamoru and Usagi's bond to be stronger in order to help them survive the onslaught of the Black Moon Clan and Wiseman .