Rakuin no Monshou - Volume 1, Chapter 1: Iron and Blood

Gods choose those with natural talent; demons choose those who never give up.My name is Dylan Chen, a person chosen by the demons. Of course, you can also call me “Ghost Guest.” On the road of reincarnation, just mention my name, and the guards of the netherworld will make way for you.That day, I asked the heavens three questions, and the celestial beings and Buddhas remained silent. Then I knew there was no longer a place for me in this world. Therefore, I have no choice but to kill them all!Better to live a complete life as a mortal than to be an immortal for eons! This immortality, I shall not pursue!

Going for a swim, she ends up in an ancient wild Beast World and ends up being brought home by a handsome wolf.
She wants to stick to the handsome wolf, stock some salt, farm some land, look at some handsome men and grow old like that, but the handsome wolf pounces on her every day.
What? He wants her to have babies?
NO~ NO~ NO~ There is no happy ending to interspecies marriages, hurry and let go of me handsome wolf~

- Description from Novelupdates

Eldraus was once a normal world , peaceful, beautiful and full of life, much like Earth.But everything changed when the Beast Mutation began.Animals started turning into terrifying monsters larger, stronger, and unnaturally violent. Kingdoms fell. Cities burned. Humanity was pushed to the edge of extinction.Then came the System, a mysterious power that awakened within humans, granting them abilities to fight back. Over time, the system became a part of everyday life. Every person now awakens with a System, ranked from the weakest gray to the legendary black and above.This is a world where strength rules, and the weak are left behind.Kaelen Maglor, son of a noble, awakens with a rare black support system. People mock him, expecting him to be a healer. But Kaelen has no intention of following their path. He chooses to walk his own.With danger rising and powerful enemies lurking, Kaelen enters a deadly academy that trains the next generation of fighters. There, he will uncover secrets, face deadly trials, and learn that the system that grants power... might also be hiding a terrifying truth.In a world where monsters roam and only the strong survive, Kaelen must prove that even support can become unstoppable.

The land of Aleisterre is a world of might and magic, sword and sorcery, where wandering knights and mysterious gods shape the fate of kingdoms. Wang Yu, a resourceful and unorthodox protagonist, finds himself inexplicably pulled into Aleisterre, a place steeped in ancient powers and political intrigue. With little understanding of the magic and faith that underpin this realm, Wang Yu is thrust into conflicts he never sought out—yet must navigate carefully if he’s to survive.Official blurb:Dragons' wings cut through the sky. Knights charge forward, magic tearing apart everything before them. Wizardry distorts the fabric of reality itself. The steam revolution stirs in one kingdom; the endless seas echo with ancient, distorted calls. Gods rule from high above, and the dark abyss leads deep underground.Wang Yu, from Earth, arrives in this unfamiliar world of fantasy.Straightforward and practical to the extreme, Wang Yu hates politics, despises intrigue, and prefers to approach everything head-on. In his own way, he leaves his mark in this mad, chaotic world.“I don’t care to listen to or understand my enemy’s story.”“I'm the tank, and you're the carry. Together, we'll be invincible.”“A man’s got to have a sense of himself, more than anything else.”Armed with an iron hammer and unbreakable will, he smashes through every obstacle in his path.