Tate no Yuusha no Nariagari - Chapter 139 - The Shield’s Brand

On the day of Ye Xi’s blind date, he married the mysterious and handsome Mr. Huo.The man said, “The house is yours, the car is yours, and even I am yours. You only need to be responsible for looking as beautiful as a flower.”She was confused and confused by the great good news. She asked blankly, “Then, what do I need to do?”The man only smiled. “You’ll know when night comes.”Later on, in order to sleep well and rack his brains, Ye Xi found out that there was no such thing as a free lunch in 

Coming from the modern era, she was sent to a strange world. The body she possessed previously belonged to a young woman whose family was thrown away by their clan. However with the “Dan Fu Zong”, the inheritance from her old world, she steps on the path of cultivation, hoping to one day become an immortal.

- Description from Novelupdates

When Ye Mo suddenly woke up, he realized that everything around him seemed to have changed: He has been transmigrated into the modern Earth where spiritual energy is scarce. His pretty master from his former world was nowhere to be seen. Most importantly, he found himself in the body of a young man who has been abandoned by his clan for an embarrassing reason…

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.