Haitokuzuma

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

Women in both series have sex forced upon them by a man who's not their husband and end up wanting more. 

Some NTR in both series. 

Both based on hentai manga stories by LINDA 

If your into the slutty housewives then these two compliment each other quite well. Also, character designs are similar. Both main characters are very busty. 

Both are titles LINDA Project originally worked on. 

Very hardcore sex scenes in both series. 

Main female character has a high sex drive. 

Beautiful women in both series attempt to resist revealing their immoral sexual acts and end up craving for more. 

In both series a beautiful married women cheats on her husband. 

Beautiful older women with large breasts having sex with multiple men. 

Slutty beautiful women getting gang banged in both series. 

The wives with another dark hidden life where they personally enjoy but unknown to them, their husbands also have a hidden desire to fulfill. Story is almost non-existent in the 2 series but that just means longer scenes.