Become Tentacle, Attack the Castle and Impregnate the Girls

Toono Yuu, a Kazami Academy sophomore, eschews typical teen life for work――

"Youth? No time. I've got jobs."

Yuu's all about practicality, choosing part-time jobs over typical teenage fun. He manages his studies well and spends most of his time working for money. His childhood friend Hibiki and classmate Riri, who looks up to Yu, think he needs a change. They each try to get him to join a club.

Hibiki champions the "Action Club," nicknamed "Acti-Club"―― lively girls promoting "more youthful fun at school!"
Riri advocates the "Volunteer Club," nicknamed "Negati-Club"―― serious girls dedicated to "using youth to better the world."

Both relentlessly recruit Yuu――

"Not interested. Don't need youth."

Yet Yuu finds himself drawn into their world, despite his protests――
His predictable routine gives way to unexpected experiences.
How did this happen?

"Isn't it obvious?" his peers suggest.
"Brace yourself, senpai. Time to embrace your youth!"

What adventures await this reluctant teen!?

Sayako Ishihara" (44 years old), a mother who loves her only son very much. Sayako will do anything for her son.

The relationship between her and her son used to be very close, but since her son could not enter the university according to her husband's wishes, their relationship became strained.
Her husband often got angry, her husband's authoritarian nature made her son prefer to lock himself in his room.

Her husband's attitude had been like that for 2 years, it greatly affected the previously harmonious relationship in the family.

Now the family has become very foreign to Sayako and her son.
Sayako's son is named Sota. Sota, who used to have a very close relationship with his mother, now prefers to lock himself in his room because of pressure from his father.
He decided to become a game streamer.

As time went by, the relationship in the family became more complicated.
Sayako's husband who started having an affair with a young woman really hurt Sayako's feelings. The man was not at all interested in Sayako's old woman's body.
Sayako really suffered, because Sayako was actually a woman who had a high sex drive.
However, because of that, Sota, who didn't care about his mother, started to care about his mother again.

Sota, who was initially unlucky in the streaming world, suddenly got a lot of viewers when his mother was accidentally caught on camera.

Sayako decided to help Sota do Live streaming, for some reason, at the encouragement of the viewers, they might cross the boundaries of a normal relationship between mother and son. They might have an immoral relationship. Will they?

The protagonist Nimura Kyouji, runs a hot spring inn at a hill station and lives a quiet life away from the city. But, Kyouji also has another motive. He secretly preys on the guests who stay at his inn and uploads their videos on the internet for a large amount of money.

Today, an innocent family from Tokyo arrives at his inn.

"Good afternoon, we made a reservation at this inn, the name is Hidaka――......"

This time, the Hidaka family, who owns a fashion company in Tokyo, will be staying at his inn. When there are a woman with big breasts and her high school girl daughters, there is literally no way that he would ignore this opportunity. Even with the husband and the daughter's childhood friend in his way, he knows that he will figure something out later.

Thus, Kyouji immediately carries out his plan to ruin the mother and daughters of the Hidaka family.

A Night With: Succubus is an adult romance visual novel that transports you to a medieval world filled with desire and supernatural intrigue. You play as a solitary individual living on the outskirts of a quiet village, yearning for excitement and connection. One restless night, you discover an ancient book containing a mysterious summoning ritual. Out of curiosity and boredom, you perform the ritual—never expecting it to succeed.

In a flash of otherworldly energy, Seraphina, a powerful and alluring succubus, appears before you. She's not just a creature of temptation; she seeks to absorb the lewd energy of those she deems worthy. Seraphina isn't easily impressed—she'll tease, flirt, and test your deepest desires, evaluating your every move to decide if you meet her standards.

When campus nobody Seiji is attacked by unhinged space demons, it’s his classroom crush Yuuri who shows up to save the day! Her magical-girl powers easily vanquish the enemy, but a surprise ambush forces her to dive in harm’s way to shield him—leaving both fatally wounded. Luckily, Miss Fujiko arrives on the scene with an enchanted thread to bind both their life forces, saving them from certain death.

Over the next three months as Seiji and Yuuri slowly recover, the pair are on doctor’s orders to stay within one meter of each other or risk snapping their “red string of fate.” This means shacking up together and pretending to be a couple to avoid their classmates’ suspicions, but despite the clueless Yuuri claiming to be a “one-woman fortress with zero openings,” her natural powers of seduction quickly result in awkward situations that test poor Seiji’s sanity and self-control...

With his dream girl only centimeters away at every waking moment, will Seiji finally summon the courage to shoot his shot?