Gimai Seikatsu - Days With My Step Sister - Chapter 19 - 6

“In a world where the strong climb, the weak are thrown to the depths. I didn’t climb, I was thrown… and I kept falling...until the Abyss stared back.”When the world ended, the tower rose from the earth, and humanity was forced into a game of survival against nightmare-fueled monsters. Machines stopped working and amidst the chaos, Xior Arden, a broken orphan boy with empty eyes was cast into the lowest depths of the Abyss.There, the weak don’t die quickly. They suffered and so he did suffer.But the Abyss chose him.With the power to absorb runes from fallen monsters, evolve his body into higher forms, and steal the essence of the creatures he kills. Xior begins to climb the tower, not as a hero. But as the thing which the Abyss itself fears:A Monarch born in the dark.***Additional Tags: TowerClimbing, Anti-hero, System, Revenge, WeakToStrong, MorallyGreyProtagonist, CunningProtagonist, ArrogantProtagonist***

Amamiya Hiroto is unlucky. His life consisted of misfortune after misfortune, culminating in an unlucky death during an incident on a school boat trip, trying to save a girl he barely knew. After death, he met a god of reincarnation who requested that the hundred or so dead passengers—one of them being the girl he tried in vain to save—be reincarnated into another world.

“Obtaining the topmost degree of talent in sword arts in the world requires giving up 72 years of lifespan, which leaves you with only five more years of your life. At the same time, you will never be able to feel love, kinship, and friendship, and you’ll end up leading a lonely life until your death, unable to procreate, or to have any descendants.

“From now onwards, everything related to happiness in the human world shall no longer be of your concern. Are you willing to accept this?”

“Hahahaha, I’m already alone bereft of all support, my hopes dashed to pieces, shouldering only absolutely irreconcilable grudge and hatred, why would I disagree? Why would I not want it? I couldn’t ask for anything better!!”

His sword sweeps across the Divine Continent for seven days and nights, moving 90,000 miles through the starry skies, unhindered.

He slays saints and buddhas in Heaven, slaughters demons and devils in Hell, sweeping away all the grievances in his heart!

- Description from Novelupdates

What happens when a history teacher dies and becomes a prince in another world? Of course, he becomes the greatest emperor!He will use all of his family's resources for his own benefit, conquer the world, and... beautiful women! Ahem. This is a novel full of intrigue where he will get what he wants, build his own empire, and finally protect his loved ones.He is a great leader to those he cares about, but a ruthless tyrant to his enemies. In this world of magic and mystery, he will not stop until he reaches the top.But what will he have to sacrifice for victory?