MTL - Study Days at Hogwarts - Chapter 1348 stop pretending

In the foreign world, the martial artists dominate the world and the sword of the emperor controls the fate of hundreds of millions of lives! Long Yu, the number one killer on Earth, after dying, takes rebirth in this new world in an aristocratic family of martial artists but faces rejection because he is unable to practice martial arts.

- Description from Novelupdates

Cho Ryu Hyang was good at math from a young age. When he enrolled into the The Theoretical Maths and Martial Arts School, the teacher, Jo Gi Chun, recognized Cho Ryu Hyang’s talent immediately and took him in.

“Listen, the ancient gods are whispering, He said…they will return eventually!”

According to legend, the rulers of this world should have been those ancient gods, and every death of them was a grand rebirth…

Those who believe in the gods wake up the sleeping gods, light torches in the dark, and burn the world.

My father disappeared because he was investigating the resurrection of a certain god, and his life and death are still unknown.

I panicked, but not totally panicked.

Because the resurrected god is me.

- Description from novelbuddy

When a person dies, they either die light as a feather (aka unimportant) or heavy as Mt. Tai (aka very important).