Inraku no Miko NTR

Episode 1 "The Evil Hands of the Father-in-law"
Haruka is being blackmailed by Gouzou with a shameful secret from the past. She reluctantly agrees to offer her body to him in exchange for protecting her happy life with Takeru. However, this leads her down a dark and troublesome path.
Episode 2 "Muddy Newlywed Life"
Haruka is forced to live a life of missed opportunities with her increasingly busy husband Takeru. Her mature body grows hotter every night. Gouzou takes advantage of this and eventually Haruka surrenders her body to him.
Episode 3 "Butterfly in the Spider's Web"
Haruka doesn't allow her heart to be taken despite being violated by Gouzou. He approaches Haruka without regard for place or time. Finally, she is ravished even in her back hole with the use of tools, planting the pleasure deep inside her...
Episode 4: "Two Days of Debauchery"
Haruka's husband Takeru will be on a two-day business trip, leaving her alone with her father-in-law, Gouzou. Hoping that Takeru won't find out, Haruka surrenders herself to Gouzou both indoors and outdoors.