Honkai Impact 3rd: The Herrscher of the Void Doesn't Want to Be a Villain

Quan was an ordinary longtime player of Honkai Impact 3rd. After clearing the game's final chapter, she died suddenly. When she woke up, she found she had transmigrated into the world of Honkai Impact 3rd, or, to be precise, into the consciousness of the Herrscher of the Void inside K423. It was 2008, not long after Siegfried had taken K423 away from Schicksal Headquarters. She was still an innocent little girl.

As a longtime player, Quan knew how the story would unfold: K423 would be manipulated by Otto, the Herrscher of the Void personality would fully awaken and trigger the Great Honkai, Murata Himeko would sacrifice herself to save Kiana, and Raiden Mei would be forced to join the World Serpent... She didn't want any of it to happen.

But she was the so-called "villain," the Herrscher of the Void.

The consciousness of a Herrscher who should hate humanity and destroy the world now housed the soul of a transmigrator determined to become a gentle big sister. Quan made up her mind: Since I'm the Herrscher of the Void, I'll be the gentlest one. I'll protect this silly "little sister" and make sure no one hurts her. Mei, Himeko, Theresa... I'll shield her from every storm.

But... this desire to protect her seemed to be getting a little twisted.

"You only need to look at me, little sister. ☆~"

A slightly yandere, extremely tsundere Herrscher of the Void big sister, and the completely oblivious K423 girl. Before the gears of fate begin to turn, an unknown, heartwarming (?) everyday life unfolds.