Later, He Became A Royal Healer - Chapter 82 - This apartment building is mine.

Years ago, Earth was indoctrinated into the “System.”Earth was not the only place with the System, however. With the System came the other races, Invaders. The Invaders had one goal, to obtain ownership of this new habitable planet. This created a bloodbath, and for years the war raged.This didn't really have much to do with Derek. Derek was kind of a loner. Yeah, he enjoyed the occasional chat or drink with others, but he never stayed in one place too long or really got to know anybody new.Derek did happen to be rather strong. After the years of fighting monster and Invaders alone, he had become quite adept at surviving. One thing that helped keep him alive was his refusal to get involved with others. He rarely cooperated with teams.One day, Derek broke his rules and decided to lend some help, as the mission didn't seem too hard. He should have stuck to being alone.

Zaria of the village of Latian. A former skilled mercenary with a strong, beautiful face and a tall, voluptuous body, she fell in love at first sight with the kind and gentle villager Albert, and since then has quit rough work and lived as a married woman devoted to him. It seemed as though their happy days would continue forever, but one day her husband Albert was injured at work, and he was barely able to stand or walk. To cover her immediate living expenses and her husband's medical expenses, Zaria uses her “previous job” to become a sword instructor for the son of a certain lord, but...

In his old world, Aiden Ferith was a peerless war hero—feared by nations, revered by millions. Through years of brutal cultivation, he reached heights others only dreamed of. But glory turned to ash when his most trusted disciple drove a blade through his heart, shattering his empire and his soul.That should have been the end.But fate had other plans.Reborn in a world ruled by magic, where mages manipulate elements and battle with dazzling spells, Aiden awakens in the body of a seemingly average boy named Logan Smith. Here, cultivation is unheard of—dismissed as a myth, or worse, a joke.But what they don’t understand will be their undoing.Armed with ancient cultivation techniques that bypass the limitations of magic, Logan begins to carve a path that defies the laws of this new realm. Stronger, faster, and more resilient than any mage, he’s not here to play by their rules.He’s here to break them.Betrayed once.Stripped of everything.This time, he’s not fighting for a kingdom—He’s here to live life on his own terms—to protect those he loves, and finally, to live for himself.

This legend tells the tale of the protagonist, Kuroki summoned to protect the demon king from the hero.

Kuroki, unbeknownst to him, suddenly came to another world. He was summoned by the demon king, Modes. The territory which the demon king overrules was in the midst of being destroyed because of the hero. He had no choice but to bow before Kuroki.

“Please save us, Savior Dono!”

Kuroki nodded, deciding to save the demon king due to an unexpected turn of event.