Fallen Young Wife - Netorare H without telling her husband

The protagonist Junjiro was pessimistic and unhappy as a child because he was born with a weak body, but gradually regained happiness due to his best friend Yousuke who was always by his side and supporting him.
Shiori, who met them during school was also saved by Yousuke.
The three became good friends, but eventually Junjiro fell in love with Shiori. However Junjiro also noticed that Yousuke had feelings for Shiori too, and unable to control his own feelings, Junjiro told Yousuke how he felt and got him to help confess his love for Shiori and started dating.
As time passed, Junjiro and Shiori married and moved to the city. Junjiro eventually became concerned that he couldn't satisfy Shiori at night due to his physical weakness.
One day, Yousuke came to their city for work, and Junjiro who wanted to pay Yousuke back for his help in the past, forced him to stay with them rather than rent an appartment.
Afterwords, when Junjiro returned home from a business trip, the usually passive Shiori, shown him sexual skills that he had never seen before. Worried about why his wife suddenly changed after being left with their friend, on his next business trip, he set up hidden cameras in the house. However, nothing was shown on them and he became deeply ashamed that he suspected his wife and best friend.
But from there her mood and behavior seemed to change. Is it his imagination, or...

Aira and Kyle are a couple who run an inn in a certain town.
Aira has fallen under the curse of a succubus. In order to break the curse she goes along with her husband’s cuckolding fetish and agrees to have sex with the hotel guests.
Can she defeat the Succubus inside the dungeon before she is forced to cuckhold her husband?

Mei, a highly skilled and accomplished kunoichi, was just about to live her dream of a peaceful married life.
However, her final mission pits her and her fiancé against unimaginable odds, as they have to infiltrate a suspicious village's corruption while posing as recently moved-in newlyweds.
Mei needs to uncover the secrets of the Hidden Village to complete her last task before her married life can begin. As darkness looms, will Mei be able to keep her promise to her beloved?
In this Visual Novel you are free to explore the world as Mei, interacting with people you encounter along the way. Some may help you achieve your goal, but not everyone will be friendly... especially towards an attractive outsider.
Encounter random events and uncover secrets behind the corruption of the Village Elder. Utilize Mei's assets to extract information from the targets and undergo a variety of heated training that will ultimately bring you closer to completing your mission!

One day, I was invited to dinner by my next-door neighbor, Ayano...

"You know, my husband is coming home a little early today.
And he said he wanted to thank you for always being so helpful...
He wants to invite you to have dinner with us tonight."

That night, I ate and drank with Ayano and her husband...
Then her husband got drunk and fell asleep.
Ah... damn it, I got an erection after seeing Ayano's ass.

"Well, I guess it can't be helped~ I did say I'd entertain you...
I have to take responsibility, right?"

I don't know why, but we're having sex right next to her sleeping husband.
Ayano's ass, her boobs, her pussy, I can't resist any of it...
Even with her husband still sleeping next to us, I came a lot inside Ayano.

Rieko Momose the protagonist's aunt.
Tender and matronly, like a true mother always doting on him.
She's fond of him but never thought of him "that way".
Her relationship with her husband is healthy. They have a daughter.
She's also incredibly sensual, giving off vibes that attract other men...
... while her husband seems blissfully ignorant of her needs.