Mercenary System: I can increase innate potential ! - Chapter 147: Army interrogation

I am merely a reviewer, albeit the products I review are slightly different. For example, I review quantum computers, artificial intelligence, anti-gravity mech armor, planetary engines, sublight colonial ships, stellar detonators, etc…

Accidentally, she got pregnant.

Leon is an average high school student who likes to watch anime and read novels.
He's about to cross the street, only to be greeted by a truck and died.
But, he got reincarnated as Uchiha yet dead again because Itachi killed him.
Leon got reincarnated again as the grandson of the recovery girl.
He got kidnaped and tortured by All For One.
After his third death, he got reincarnated as a son of Bibi Dong.
In this fourth life, he wants to change his fate to become the strongest.

Note: Please read the tag before reading.
- English is not my first language, so there would be grammatical mistakes in this story.
- Please give my story a proper review.
- I accept a suggestion, but no spam!

When the rifts between worlds opened, countless monsters flooded through, engulfing human cities and plunging the world into chaos. Faced with this apocalyptic crisis, humanity was forced into a new era where every individual had to choose a profession. Nations now compete to cultivate elite practitioners, striving for supremacy in the rankings of alternate world conquests.But as the world teeters on the brink, the first and greatest champion awakens after a million years of slumber—armed with untold buff amassed from his millennia of AFK grinding.The bosses of the otherworld tremble in fear. Global T0-ranked powerhouses bow down, offering their loyalty...[Disclaimer: Here countries fight against each other and this is adapted into a Manhua.][Schedule: 2 Chapters/Day]