The Mysterious Heiress: Researcher In Disguise - Chapter 30: This Is A Personal Matter

I fell into a game world out of nowhere with an instant kill skill.
And then somehow, I became a bigshot.

She was born into a powerful family of the nobility, a blue-blooded aristocrat as capable as any man. He rose from humble origins up the military ranks, an iron-blooded knight with high ambitions. A transaction for power severed her from her childhood sweetheart. A tardy encounter was the beginning of his and her vow to meet life and death under heaven, standing shoulder to shoulder.

Political intrigue, dynastic succession struggles. He trampled through it all in the toil of becoming emperor.

Old enmities became new disputes, concerning life and death of entire families. She entered once more into the palace, changing the entire political climate of their world.

Meeting once again, they had become strangers. The peach blossom were all fallen, no more than a golden age grown cold.

- Description from Novelupdates

Ning Bei worked hard to get into Lincheng University and came to the city Nan Xia was in. Nan Xia introduced him to others as: “Her younger brother.”

After returning home, Ning Bei was lying on the floor like a stray dog.

His brother Ning Nan couldn’t look at his depressed face anymore, so he gave him a kick: “Now you know that acting like a dog will end badly?”

Ning Bei closed his eyes, and said in a cold voice, “Never again.”

Ning Nan chuckled and was about to leave when the exclusive ringtone that Ning Bei set for Nan Xia suddenly rang in the room.

Under Ning Nan’s fiery gaze, Ning Bei lay on the ground for one extra second.

Then he quickly got up from the ground and ran to the phone.

Ning Nan: ?

Ning Bei: Scram.

- Description from Novelupdates

He crossed over to a new world where humans have magical power. They are called warriors. They use their power to kill the monsters that appear out of nowhere. Dragons, Dungeons, and Magic users are pretty common in this world. If you want to live in peace, you need to have that power. You can also become a powerful clearing dungeon.

In this dangerous world, he has a system that can help him grow stronger. But he didn't want to be a high-profile warrior who attracts much powerhouse attention or become a lab rat. He wants to be Low-profile and grow strong using his system.