MTL - Cultural Invasion In Different World (Cultural Invasion into Isekai) - ~ What happened to the ninth fifty-seventh? Kill a few?

The world is separated into three realms: Aegaryn, Terranis, and Abyssion.Terranis and Abyssion realms have been in disharmony as the Demon King of Abyssion aims to overthrow all the other realms. In the tackling of this and to help the humans of Terranis defend themselves from the demons,A street orphan becomes a sacrifice in a summoning ritual for an S-rank beast. But he is given a golden opportunity of a lifetime as he is transmigrated into a hyena. Guided by a mysterious system that helps him unlock his boundless potential, he evolves with each rank upgrade, a feat no one of his kind has ever known. His journey is one of transformation, both in form and spirit. Each evolution brings new powers and challenges as he is summoned into deadly wars, cruel betrayals, and battles that threaten the very balance of the realms.Along his journey, he meets a summoner whose kindness and ideals are a stark contrast to all the summoners that he had met previously. Unlike the others, she treated him differently. Gave him a name. Through her, he begins to question his path, torn between his primal instincts and the flickering remnants of his humanity.But as the Demon God stirs in the shadows, threatening to collapse the realms into chaos, he must rise to face his ultimate destiny. To protect those who matter, to shatter the chains of servitude, and to ascend to the pinnacle of power—Ash must embrace his boundless evolution and become a force unlike any the realms have ever seen.

In my last life, it was difficult to have a child. In this life, I was given three radish heads as soon as I passed it, and there was an extra head. I thought my husband was a rough guy, but I didn’t expect a tough guy to have tenderness.

- Description from novelbuddy

Ruel finds himself thrust into a brutal post-apocalyptic world, bound to a bizarre “Milf System.” This system demands morally questionable acts – NTR, seducing milfs, and claiming other men's wives – as the sole means of gaining strength and essential survival skills.The brutal reality of this new world awakens Ruel's hidden lust and dark desires. He swiftly abandons any semblance of morality, embracing the system's perverse demands with growing fervor.Driven by an insatiable hunger for power and pleasure, Ruel revels in the ravages he inflicts, using his newfound abilities to dominate and conquer.His journey transforms him into a ruthless force, where survival is intertwined with the satisfaction of his darkest urges, leaving a trail of broken relationships and conquered women in his wake.

He was supposed to be the next big thing.Three years ago, Riku Aoyama was Japan’s rising basketball prodigy…Until a devastating injury and a brutal betrayal shattered everything.Now? He’s just a ghost of his former self—until one empty gym, one dusty court, and one crazy idea reignite the fire.Form a team of nobodies. Start from zero. Take on the monsters ruling the court.With broken players, forgotten schools, and no sponsors backing them—Riku’s team, Kaizen High, isn’t just here to play...They’re here to change the game.No powers. No shortcuts.Just sweat, soul, and skill.In a world where basketball is war—Only the crownless will rise.