In a summer once every five years, demons in the mysterious Tower of Druaga lose their powers due to the magic spell cast by a god named "Anu".
五年一度的这个时节，因受到天上阿努神的保佑，塔内的魔物都会失去一部分的力量。
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The summer of "Anu" : in a summer once every five years, demons in the mysterious Tower of Druaga lose their powers due to the magic spell cast by a god named "Anu".