Titty Fuck Mystery Of Hot Spring Inn

A young man despised by his family discovers that he was left behind while they and his little sister go on vacation to some mysterious place.
Since “you” never had a computer, you take this opportunity, if it can be called that, to use your little sister’s computer.
During this time, some mysterious being contacts you in the chat and makes you an offer.
What could this offer be?
 

Tomoya: "Hmph, Tomoya. Please make me feel good a lot today."
　It had been a long time since I started going out with Marie.
Today, Marie's grandparents are on vacation, so I was invited to spend the night at her house by Marie, who said she was anxious about being alone at night--and we ended up spending the night at her house.
Inadvertently, after dinner, Tomoya gets into a good mood and Marie pushes him down. As they were making out like that, the living room door unexpectedly opens.
It's been a long time," she said. I thought you'd be lonely by yourself, so my mom came over to see you.
　Everyone froze. Silence. A few minutes later, Tomoya and Marie are sitting on the floor in the living room.
Tomoya and Marie are sitting on the floor in the living room. I don't approve of this kind of slutty relationship.
　Sophie, the mother, stubbornly refuses to admit to having sex with Marie.
After Marie angrily leaves the room, Sophie reveals the complexity of her feelings.
I want her to be happy. Not only in her personal life, but also in ours."
　Tomoya was surprised to hear this. Sophie offers him a condition that if he satisfies her sexually, he will be allowed to have a relationship with her daughter.
Thus begins Tomoya's challenge to satisfy his mother...

A young man despised by his family discovers that he was left behind while they and his little sister go on vacation to some mysterious place.
Since “you” never had a computer, you take this opportunity, if it can be called that, to use your little sister’s computer.
During this time, some mysterious being contacts you in the chat and makes you an offer.
What could this offer be?

Your first adventure begins in four days. And today, you’ve reached “The Angel Inn”, where you can relax before the departure. Is this your lucky day? The only male guest, with 3 beautiful girls.
Get to know them, and be wise in managing your time, because good things may happen at The Angel Inn!

A port-town on a certain continent...
A mother [Emelia] and son [Ruji] are running an inn together.

They were adored throughout the community,
and the inn was a popular place of gathering.

One night, Ruji tells his mother that
"I want you to have sex with other men!"

Emelia was hesitant, but ended up listening to his demands,
and begins having sex with men that Ruji chooses but...

Little by little, Emelia's demeanor began to change...