MTL - 1980s Group-Pampering: Cannon-Fodder Real Young Lady Gets a Divorce and Becomes a Billionaire - Chapter 501 not relatives

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

Kain can control luck because of the curse, doomed to run from death - forever.“I lost everything again...?” Kain muttered. The Keepers fell as the monsters burst out of the Rift.Unlike the others, he hated Keepers, the only people capable of fighting the creatures from the Astral Dimension. Everyone saw them as heroes, but Kain blamed them for the greatest tragedy of his life - the death of his parents.Ironically, the sacrifice of one Keeper allowed Kain to obtain a Rune Brand - the key to begin a trial, the outcome was either power or death.Facing another world, Kain discovered that his blood was cursed, and misfortune would always haunt him.But death would avoid Kain, wanting to keep such a valuable sacrifice for a god. Only failure would await him, but if it were possible, death would pass by.Now, Kain must break his curse and take fate into his own hands for the first time in his life or remain a nameless offering.

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. Haruka’s beauty and charm made her the center of attention, quickly becoming the school’s prima donna. But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically. Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible. This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

The Buddha said all beings are equal, so why then does he sit high on the peak of Mount Meru, issuing commands and directions?Tathagata, you owe me five hundred years!A Monkey King who could recall past and present lives, this time, could he leap out of Tathagata's palm?…[Guaranteed three updates every day, never to fall behind, or may I chop off my own hand.]