Born to Be the Strongest Thunder Spell in the World!

My name is Leon, the youngest son of the Astra family. I have been chosen by Thunder for protection since I was born, allowing me to master powerful power that is inappropriate for my age. When I was ten years old, I could penetrate the defense of an emperor-level warlock with one strike. So, I soon felt that life was meaningless, so I went out on an adventure and met two very good companions. One is the eldest lady of the Holy Light system of the human race, and the other is a naive warrior of the orc race. The first commission we completed together allowed me to see the darker side of the world, and also made me truly aware of my unique talents. When this madman was about to die, he threw the three of us into the underworld, which is said to be a place where the cannibalistic undead live! But we soon discovered something was different. A beautiful sister named Lilith saved us, and the undead were actually very humane. But then we were involved in the internal strife of the Vampire Clan. For the first time, we had a formal confrontation with a powerful saint. This time, I realized that there were still many shortcomings. So I decided that in a short time, I would go to the best magic school in mankind to study, to match my powerful protection as soon as possible, and to protect my family and companions. I must become the strongest magician in history!