As Sukuna in Invincible - Chapter 7: Explanation

My GPA is lower than a slime’s mana.My name is Atheron il Ataraxia, and I’m the walking disgrace of the Royal Academy of Magic.I’ve been held back twice, my essays are used in class as examples of how not to cast spells, and professors sigh in relief when I don’t blow something up during morning lectures.Truth is? I don’t even like this world.I was summoned. A girl from this world pulled me in like a card from a cursed deck, and now I’m stuck living here. Attending classes, battling evil spirits, and dealing with stuck-up nobles whose names are longer than my backstory.But something’s off. My mana doesn’t behave like theirs. The world listens when I speak. And the whispers I hear at night? They’re getting louder.They say evil spirits wander through Ashgrad under the light of the moon. And I think they’re looking for me.They think I’m a failure.Maybe I am.But if this cursed academy wants to survive the next full moon, they might just have to rely on me — the last-ranked summon with a dangerous secret.

I will go forward step by step, until one day I surpass you, Dad! !!

Zhao Gang, who has graduated from the World Hunter School, returns to the city. He inspires his own country and surpasses his father who is already at the top of the world.

- Description from Uukanshu

DEATH COULDN’T KILL HIM—IT JUST GAVE HIM A NEW LIFE TO DESTROY.Reo Carter was a name that made even the hardest killers shudder. A perfect hitman—no hesitation, no mercy. Until his own crew turned on him, leaving him bleeding out in a pile of bodies that used to be his enemies.But fate wasn’t done with him.He wakes up in a world of nobility, magic, and honor duels—trapped in the body of Leonhardt Caulem, the weakest, most useless son of Duke Caulem. A spoiled brat with no skill, no spine, and a reputation so pathetic that even servants look down on him.They think he’s weak? They have no idea who they just brought back.- Swords and magic? He spent his last life dodging bullets—this is child’s play.- Dueling etiquette? A knife in the ribs is the only honor that matters.- A noble’s life of luxury? He’s had enough backstabbing for one lifetime, thanks.He was once a ghost in the underworld—a man who didn’t exist. Now, in a world where strength is everything, he’s about to remind them what true fear looks like.The hitman is back. And this time, he’s aiming for something more.#NobleByDayKillerByNature #TheyBroughtBackTheWrongMan #FromHitmanToDuke #SayYourLastWords

What would you say is the most valuable thing in this world?