School Rules Are Absolute

The school you attend turns into a brothel late at night...?! You accidentally obtain a membership card and enter the school late at night out of curiosity, where you find a junior, senior and teacher waiting for you. Now that you've seen their other sides, who will you choose for this thrilling night?

There is a boarding high school for girls. One day, Koji is employed by them as a counselling doctor, and meets four pretty girls. They are all interested in erotic things, and give him various sexual orders. He declines it at first, but he gradually gets addicted to it....

Hi, I'm Yumiko!
In charge of admin matters here at Sakugari chess school~ 🌸
I'm pleased to welcome you! It is my ambition to share the beauty of chess with you, teaching and learning together step by step.
We’ll pair you with the other girls during class to help you master new strategies and level up your game!
Oh, and we also host fun events outside of class, so there’s always something to look forward to!
I can't wait to meet you in person! Let’s make lots of great memories together! ❤️

My name is Yoshimasa. I'm an ordinary student.
One day my parents moved, forcing me to attend another school.
It was a private academy. The school distinguished between three genders: boy, girl and transvestite.
I wasn't friendless for long. A classmate named Koyomi talked to me.
Then I met the class president Kaoru, and Yuuki, an underclassman from PE.
All of us were just discovering our sexuality!

You are the homeroom teacher of Class 3-A, a school of 10 students.
Innocent yet curious, each girl has her own unique personality.
As you progress through the story with them, you will gradually become closer, and a “secret event” may occur…