"Do you know what the easiest thing in the world is?"

"... "

"Turning people into idiots."

Mazelan suddenly felt uncomfortable by the accompanying smile on Isaac's face.

He's willing to go against his superior's orders to let children escape, and hopefully surrender safely. Then he even kills his traitor of a commanding officer.

The MC is a battle-hardened soldier from korea that went slightly crazy due to the corrupt and incompetent people in korea selling out their country during the war against japan, china, and north korea. He starts doing any deeds to scare the enemy soldiers into fearing him, such as using chemical bombs and so on, anyway this life is shortly ended in 5 chapters, where he reincarnates in the son of a noble's & his concubine. He wakes up and he realizes that his "family" over here want him dead.... so that he doesn't inherit the family estate. And then he is sent to the Campus, the best/biggest school in the world. In this world, there is only 1 empire... there are no other countries. Once in school his goal is to become an office clerk so that he can lead an easy life. Unfortunately he doesn't have any talent, can't feel mana so can't become a mage or a swordmaster, doesn't have the basics in administration so he can't enroll in the administration school on the campus either. So now he becomes an outcast in the school, and starts getting beaten up. So for this reason he starts being resourceful, bending rules/finding loopholes to survive/make an easier life for himself.

So far in the story his only talent is being resourceful, we're not given any indication that he has any other aptitudes such as becoming a swordmaster/magician or whatever in the future. We've been give some small hints on the fact that someone/some organization is surveilling him and that he might become able to wield mana/magic in the future with the help of smoking.

like some isekai japanese novel translated nowadays.

please dont judge me, I in fact love japanese novel and had enjoy a lot of them, but when I read some of few koreans novel, the stories feel more matured, I think.

Mazelan mentions Isaac isn't the only person to be in a situation like this and yet in those year in Campus NO ONE LIKE THAT appear even after Isaac become an very important person a.k.a VIP and try to become his opponent. The only way I think its possible is at viscount or higher they can shutdown the agent completly since a mere baron can hide their heir in 10 year

THIS IS THE MOST UNLOGIC PART. The Campus work like a GRAND ÉCOLE in french which compose a bunch of school so you need to enroll in one to get graduate. During the talk with Mazelan his biggest problem is to survival for 5 year (No school will accept him). The problem here is every one is fk busy to try to pass the exam. The only one care is those who doesn't try and want to drop out => bully + his relatives who wish their nuisance to die. Yet there aren't any death since the new law had adapted (Only 5 in 300 year). So they can go there playing for 5 years accept some bully and get a certificat of the top school in the world while the other have to try their best to study and can be expelled????