NTR Dungeon of Twisted Common Sense

A quiet, academically gifted girl.
Contrary to her gentle appearance, she possesses a strong sense of justice.
She also has a stubborn side, finding it difficult to change her mind once she believes something is right.
She believes that “everything should be approached seriously and diligently,” and often clashes with those around her by forcing this belief on others.
Of course, anything “perverted” is out of the question for her…
But her earnestness is being taken advantage of by the manager (you)…

Walt and Anita are childhood friends and lovers.
They come to a frontline base in the west to find the Legendary King's Sword.
However, they first come across a guy called Cory, a high-level adventurer
who tries to force Anita into becoming his woman...
"I'll definitely reform you and protect Anita!"
"Hehe, let me see if you're all talk!"
And so begins the battle for the woman he loves!

When a mysterious package arrives from his friend, Sakura, the protagonist opens it—only to be instantly teleported into an alternate dimension ruled by a succubus.
They aren’t alone. A crowd of men and women are trapped alongside them, and the succubus issues a twisted ultimatum: conquer her dungeon, or stay trapped forever. To make matters worse, she has branded every female captive with a cursed Crest of Lust.
Time is running out. If they don’t escape quickly, the curse will take over, driving the women into an insatiable frenzy for sex until they permanently transform into succubi. The protagonist must fight through the dungeon to clear the curse and save Sakura from this fate.

The protagonist happens to get his hands on a common sense alteration smartphone. Using the power of that app, he alters his little sister’s common sense, engaging in various erotic pranks and sexual acts in this daily life simulation game.
In this work, you can spend summer vacation days together with your little sister. Every day, you can engage in wholesome communication with her, such as conversing and skinship. On top of that, by adding new common sense alterations, various erotic choices will become available as well. Use the power of the common sense alteration app to spend a debauched summer vacation with your little sister!!

Nobles who look down on the common folk and act with utter tyranny. A military that uses its might solely to subjugate the weak. Men who view women as nothing more than outlets for their sexual desires.
In order to fundamentally change this rotten country, Elisa built up her strength and enlisted in the military, aiming to rise through the ranks to the upper echelon. One day, Elisa is granted a massive opportunity for promotion and is sent into a dungeon alongside an incompetent subordinate for what is supposed to be an exam.
However, that dungeon was actually an erotic trap dungeon managed by the state, designed specifically to turn women into sex slaves!
And so begins the journey of an incompetent subordinate turning the strongest boss into a sex slave…