Saving 80,000 Gold in an Another World for Retirement - Chapter 147

Cosplayer Liu Mang accidentally crosses through time and arrived at the Eastern Han Dynasty wearing Aries Gold Cloth. (Saint Seiya!) He arrived on top of the walls of XiaPi right when it was about to fall to Cao Cao.

Reincarnated into an eroge brimming with cunning and seductive women, Shia quickly learns this world is no paradise. His childhood friend? A manipulative beauty with a penchant for control. The maid? A silver-haired, venomous tsundere. Even the elegant motherly figures hide sharp fangs behind their kind smiles.Fortunately, Shia knows this world’s secret: a unique system that only he can use. From making alliances with snake-like in-laws to hosting wild parties in the elf kingdom, Shia takes charge as the self-proclaimed administrator of chaos. But taming bad women isn’t easy, and Shia’s life quickly turns into a whirlwind of power plays, unexpected friendships, and wild nights.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

On the day his parents died, Aleric was cursed and became hated by all.His flesh took on the pallor of the undead, marking him as a monster in the eyes of the living. From that day, Aleric was forced to survive alone in the world that despised him.Everything changed when he uncovered an ancient necromancer’s crypt and a staff that promised him the knowledge of Dark magic and uncovered what the curse truly was.Aleric was a death-touched–a person to whom all Dark magic was as natural as breathing! He learned in days spells that took years to others.Dark magic had long been branded evil. The kingdom of Dark mages was destroyed and its people killed. To accept this power was to become hunted as well... But to the world, Aleric was already a villain.So he chose to become not just a villain, but one so powerful that not even the entire world couldn’t bring him down! He will build a kingdom that will stand eternal, and every killed foe would join his undead legions!The nations of the living shook in fear. The age of the living was ending, and the armies of the Supreme Necromancer were going to reshape the world.