Let's Steal Away My Beloved Nurse Sister

Ishidou Narumi, a student attending a rural all-boys' school, spends his noisy but enjoyable days with his slightly ditzy best friends.
He has a "secret" that he has not made public.

In this all-male school is a popular, gentle health teacher named Mitama, who seems to be the human embodiment of healing.

Another one is Aya, his homeroom and chemistry teacher, who is feared because of her sharp eyes and strict attitude, but is also popular because of her model-like appearance.

As the only ladies in a school with no female students, these two women and Narumi have a "special" relationship that they do not tell anyone about.

Although they act respectable at the school, it's all just a facade. The truth is that one is a spoiled, no-good Oneesan, and the other is a timid worrywart born with a bad look in her eyes. Since he happened to know those sides of the girls, Narumi has developed a particularly close relationship with them.

However, they were still teachers and student. No matter how close they were, there was a line they would never cross. But the situation changes drastically when an enfant terrible named "Patricia" enters the picture.

Patricia (aka "Patty"), arriving as an English teacher, falls in love at first sight with Narumi after a certain incident. Being a bundle of energy, Patty quickly makes a move on Narumi (in a naughty way)...
From there, his relationship with Mitama and Aya begins to change.

Who will win this sudden battle?

Mitama, the pampered Oneesan?
Aya, with the face of a wolf but the heart of a rabbit?
Or Patty, rushing headlong into everything like a wild boar?

It all depends on Narumi's lower half...?

After losing our parents, I dropped out after junior high to go straight to work and raise my younger sister all by myself.
I worked my fingers to the bone for her sake, covering all her living expenses and college tuition so she could go to university.
My sister grew up to be a truly pure and kind-hearted girl.
However, at that university was the same delinquent who used to bully me back in the day, and my sister’s voluptuous figure quickly caught his attention…
To keep track of the delinquent’s moves, my only option is to watch his posts on my smartphone…
Will my beloved little sister end up defiled by that delinquent?

I live together with my older brother and his beautiful wife, Miyuki. Living every day alongside such an alluring sister-in-law constantly leaves me aroused. One day, by chance, I discovered Miyuki’s secret. To make her mine, I used that secret to blackmail her.
The relationship that began with blackmail turned her into a slave to my desires, and while wearing the mask of “family,” we continued to pile up sins day after day, hidden from my brother’s knowledge…

Would you like to peer into the darkness of the hospital...?
The "Security Guard" series is reborn within a modern-day clinic.
"Voyeurism," "Eavesdropping," and "Coercion"... Corner the finest medical practitioner vessels...!
 
I am the friendly neighbor. My mission is to protect their safety and peace. As long as I am stationed here, this hospital is my home. Understand that this is a miniature garden under my total control. Now, offer them up to me. As the price for my security services, you shall offer yourselves--
 
Chase the vessels and grasp their time schedules...!
Once preparations are complete, begin the "Voyeurism" and "Eavesdropping"!
From their defenseless states during work to changing clothes, excretion, and shameless private acts--
Once you have grasped their weaknesses, summon them via the nurse call for "Coercion" and "Discipline"!
The process of these beautiful medical practitioners falling into depravity is colored by stunning illustrations and overwhelming full voice acting...!!
An immersive Simulation Game where you become a patient and spend a week of hospital life.

I happened to discover the teacher’s secret.
From that day on, a special relationship began between me and her.
Shiori Kuroba, 24 years old.
Teacher of modern Japanese literature.
Her stunning beauty draws everyone’s eyes,
and her figure is practically hazardous to impressionable teenage students.
Now that I hold such a woman’s secret,
there’s only one thing to do.
“What is it you want from me…?”
“Teach me… Teach me privately, Sensei.”
In exchange for keeping her secret,
her special lessons begin.
My distance to Sensei grows even closer.
I won’t let this be a one-time thing—
I’m going to become Sensei’s master.