Zeitaku na Mi no Ue Tokimeki wa Umi wo Koete!

Karen, a young girl who joins a harem seeking a comfortable life with regular meals and rest, becomes drawn to the emperor, Tenrin, through unforeseen circumstances. As she continues pursuing her interests while evading his romantic overtures, she accompanies him on a walk in town and encounters Makana, a foreign student in trouble. Makana is pursued by the police for possessing a harem blueprint he cannot explain. Karen attempts to solve the mystery using her natural creativity, but complications arise.