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Netorare (寝取られ), also referred to as NTR or cuckold, is a genre where the intent is to cause an emotion of deep jealousy or distress in the reader. A direct translation of the word results in the definition "having your lover taken from you" or "to have something taken from you while you sleep". This is often accomplished by having main protagonist's loved one seduced away from them, with or without their knowledge.