Aisai Nikki

both series have monkfish to a wife / lover who ends up yielding to the situation. also the female protagonists are having a mental state of "mind break" or nymphomania. 

Both are slightly softer versions of the NTR category of hentai. Both are awesome. 

Husband enjoys watching his hot slutty wife have sex with other men 

Both titles are classed as NTR or Netorare(Cuckold) which is a sub-genre in hentai and delves into the betrayal from the main leads partner. So for those unprepared, be warned that each title will usually get a rise out of you(and not the good type from down there) as in most cases, its usually in the form of the girl having sex with someone else whilst her partner watches defenseless all due to his own insecurities. If this is your fetish then I can guarantee that both titles will aim to please. For more info on these type of hentai, visit The Netorare Club here in MAL. read more 

An inner desire from another man to make a woman his property. 'Aisai Nikki' puts more attention from a household perspective while 'Love Bitch: Yasashii Onna Similar' emphasis on the dark corners of the streets where anything is possible.