Netorare (寝取られ, most commonly abbreviated as NTR) is a notoriously controversial genre of hentai featuring cuckoldry (an act of adultery). As a fetish, NTR hentai are designed to provoke jealousy in the audience by proxy by having a character indulge in sexual activity with someone other than the protagonist. This has given NTR a highly infamous reputation amongst hentai fans, who frequently express their displeasure over the genre.