Martial Arts VS Magic Book 1Mana Cultivation

Someone once asked: What is stronger? Martial arts or Magic?

I answered:

Why not simply use both?

In a new world brimming with possibilities—Levels, Classes, Skills, Dungeons, and Monsters—I found myself reborn as a noble family’s troublemaker son.

As a gamer, a magical world and a lazy life as a rich noble's son should have been a dream come true. But there was a massive catch. An absurd quest threw everything into chaos.

[Quest: Make a cult; Save the World.]

How could I, in the body of a useless noble, survive In a world dominated by jealous Gods and nefarious Devils, while treading on their domains?

Thankfully not all hopes is lost. A few things can help me accomplish my quest.

A fiancee that also happens to be a vampire. A Magic Academy where I can find minions and allies. Finally --A Mysterious System.