I Became the Villain's Trainer - Chapter 28

Nora is transported to another version of Earth populated mostly by men. A world where women ruled with absolute and unmerciful power. Nora must protect herself, her identity and the group of men that she is forced to love. Will she be able to maintain her cover identity and make a life for herself that she can ethically tolerate?

Hello, welcome to join the scp foundation, as a D-level personnel, you will get the following benefits:

First, you will get a unique identification number printed on your brand new orange clothes (prison uniform), such as D-213.

That’s not enough, you will also get a brand new name, which you will use to communicate with each other in the future! Like Billy-D.

As a D-Class, you just have to satisfy your superiors, and they’re good guys with guns! They will help you to have friendly interactions with all kinds of safe creatures (help the ten-meter killer lizard clean the room)

In order to protect your health at all times, our infirmary is always open, even if your work here is as easy as taking a walk!

When you’re done with a D-Class for a month, you can go home (and be shot), no matter what prisoner you were-

Don’t wait any longer, come and join scp!

- Description from novelbuddy

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.

After his fall, the Duke who was distant with his wife and daughter recalled his memories of another world. With a new perspective on life, he swore to cherish and protect those two.