Bleach: The Strongest Shinigami - Chapter 239 ⥤ Traitors and Rebels

At the Tristain Magic Academy, her classmates call bumbling witch-in-training Louise Francoise le Blanc de la Valliere “Louise the Zero.” During an important coming-of-age ritual, when each student must summon their own witch’s familiar, Louise confirms her classmates’ opinion by accidentally conjuring up a normal teenage boy from Japan. Whether the two of them like it or not, the laws of magic bind them as master and servant forever! A hilarious novel with romance interwined.

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

The Celestial War!A war that has been ongoing since time!Pyrrhus, the human god isn't left out. He's known for his might and greediness, conquering many stars and sectors!Kyle Lin, a boy of Zekkoa becomes the recepient of a system; one which Pyrrhus has sent as a help. Forced to reincarnate into a magic world, he must grow stronger as the world is at stake.Kyle must free himself of being a pawn and take power into his own hands. Witness his journey to become an Omni Mage!

The main protagonist Chen He often meets crazy people in his life, and all these people have very deep prejudices against him. They often do weird things.

(1)

Once, Chen He polished off a bunch of hired killers (who seemed to be after him?), and eventually found the mastermind.

Chen He: You and I are complete strangers, so why are you doing this to me?

Mastermind: You’re gonna kill me after ten years! Of course I’ve got to make a preemptive strike.

Chen He: …

(2)

Chen He: Sir, we have had no bad blood between us, and I have not done anything to offend you. Why are you being so threatening?

Taoist priest: Hmph! In the future, you’ll be offending me to no end. Haven’t you been looking down on me all your life?

Chen He: …but I still have my entire life ahead of me!

(3)

Antagonist A: Chen He! Because of your master, I was rejected by XX Sect, and so I was forced to become a demonic cultivator!

Chen He: Who…who are you?

Antagonist B: My future lover’s meridians and good looks were ruined by you, and I’m definitely not gonna let you do it this time!

Chen He could not help but think: There is definitely something wrong with my life!

- Description from Novelupdates