MTL - Crazy Leveling System - Chapter 2780 Explode everything

What will you do if you were transmigrated into the novel you were reading.Alex, an ordinary boy was faced with this reality as he was transmigrated into the novel he was reading. But there was a surprise there as he was not the main character or even one of the side character. He was an extra.*Ding[*Welcome to ARCANIA][Successor of the Apex]He became the successor of the strongest being in the world and was given a chance to live a whole different life than his past and he gladly accepted it as his past life was anything but good.But will his life be like those extra's who became cannon fodder or would it be whole different life ?Could he became powerful enough for a threat bigger than demons?****1-There no harem in the novel.2- Our mc is overpowered and there will be no hiding of strength at least to some extent.3 I am new at writing so please if I make mistakes do tell me.

God: I shall bestow the Saintess upon you.
Pope: W- wait a moment! This is a boy!
God: That is the Saintess.
Pope: ??????

And just like that, the Saintess was raised by the church for fifteen years without any questions asked…

- Description from Novelupdates

A young man with an extraordinary mind is off on an exciting adventure when he mysteriously wakes up in the body of a feeble slave-guy in a different, rich in quirks world.

The main character, a selfish jerk, would use extreme means to achieve his goals. However, he never allows his base instincts to overrule his sense of decency. He always pays back both good and bad deeds.

Will his (terrible/excellent) mentality help him make a fresh start? Will he get through misfortunes and hardships of the new world?