Manhwas

Si Yan, once a fearsome powerhouse with dual abilities in the apocalypse, dies in an explosion, only to wake up in a primitive beast world. To her shock, she has become the notorious villainess and the mother of four little snake cubs! But this mother was so cruel that the moment Si Yan opens her eyes, her children are already plotting to assassinate her. Now, she has to find a way to win back the hearts of her villainous cubs, farm and survive in a strange new beast world.

Hinowa Tomari is a normal high schooler, until one day he's told that he has to become the wife of a mysterious creature called Kanenogi. This is the start of their newly married life.

Cute but dumb as hell and somehow still the strongest! ...Reincarnated as an ostrich beastkin with innate physical ability!!? With intelligence from my previous life, I lead a flock through a monster-filled hellscape just to stay alive One day, after saving a party of human adventurers from certain doom, she finally makes contact with the civilized world she had dreamed of!! Unlike the uncommunicative ostrich-kin shes used to, shes overjoyed to meet people she can actually talk to but!? Strong, silly, and completely out of control Watch out, the ostrich beastkin is on a rampage!

Hikaru, who died at just 20 years old, was granted reincarnation in another world by a goddess's mercy. But due to a mistake, he wasn't reborn as a humanhe became moss! "I'll die for real if I don't do something!" Terrified to begin his new life as the weakest possible creature with abysmal stats, Hikaru strategizes how to survive using his rebirth bonus: "Additional Skill Acquisition." As he defeats nearby small animals with his chosen skills and newly-learned magic to grind levels, he makes an incredible discoveryhis moss form can evolve into other species...!?

After a fatal accident, Hitoya is reborn from modern-day Japan into a game-like world as a monster dwelling in a dungeon. In this world, monsters are endlessly hunted by humans and exploited as mere materials a relentlessly unfair existence. His desire to protect his fellow monsters drives him to awaken. Becoming a dungeon boss far beyond the norm, he sets his sights on creating an SSSrank dungeon that absolutely no one can ever conquer.x If you want, I can also tighten the title for a webtoon thumbnail, like "Unclearable: SSS-Rank Dungeon Boss".