MTL - Space and Rebirth: The Favored Genius Doctor and Businesswoman (Reborn In Space: Pampering The Genius Doctor And Businesswoman) - Chapter 1339 Who is it?

In her third year living in this steampunk world, Ciel gained the ability to simulate both the past and the future.These simulations turned into a game where she could act without restraint, and after countless trials, real life became a replica she could navigate as though speedrunning it.Churches, potions, mutations, the Old Gods, witches, sealed artifacts… none of these have anything to do with Ciel. She’s just an ordinary girl who wishes for a peaceful life.She just happens to be particularly skilled at snuffing out danger before it even begins.

After traversing through time, Li Xuan was delighted to have become the second son of Earl Chengyi's mansion, as well as a proud warrior of Liudao Fumo. However, just ten days into his privileged life, he faced fierce female supervisors, terrifying ghost-girls, and spiteful demonesses one after another.Amidst this whirlpool of challenges, Li Xuan claimed he didn't feel a bit panicked. A few years later, standing above the Yangtze River, he swung his sword, and with that, thousands of miles of landscapes were instantly frozen.Where will the demoness escape to? Take my sword!

I am Master Siwei, and I speak for arcane arts.
This is an era of heroes and heroines.
This is an era of great changes.
In the end, it will be an arcane era opened by me.

- Description from Novelupdates

In the past life, he was an aerodynamic engineer of a well-known company, and in this life, he is a college student of a famous school.

When the two identities are perfectly integrated, what sparks will appear.

His life experience is also slowly uncovering the mystery, whether he can beat the tycoons of this era, and whether he can stand at the peak of world business.

- Description from novelbuddy