My Life After Death MLAD

Death. Nobody knows how it feels. Unfortunately, I had the opportunity to experience it.
All I felt was pain. Indescribable pain. It was agonising.
After being caught in a terrorist attack and dying, I somehow reincarnated.
A new life, a world where every being process an energy called mana.
A dreamlike world where magic exists.
But this world had infinitely more dangers than ours.
Beings who could kill people with the snap of their fingers. Destroy mountain ranges with the swing of a sword.
To survive, I had to become strong. Stronger than anyone else.
This is My Life After Death.

This is my first novel, so it is may contain many errors and maybe plotholes.