After the series concludes, His Majesty Yuuri Shibuya embarks on a journey to assess the return to normalcy. Alas, he unexpectedly crosses paths with Small Shimeron's king, Sararegi, who may not be what he appears to be. Seeking respite and company, Yuuri visits Shimaron, only to have the "friendly" ruler of Little Shimaron join his party and insist that the Maou visit his kingdom. Matters escalate quickly when the Original king alerts Yuuri's brother and friend to his perilous situation.