Takarakuji de 40-oku Atattandakedo Isekai ni Ijuu Suru - Chapter 100

A black pearl brought Jiang Feng from a doomsday stage where top masters with one emperor, two emperors, three emperors, four deities, and seven peerless cities show off their glory to parallel time and space, and this time and space-the end of the world has not yet opened! !! Under the sky, the youth look up, if I have strength, can I get through … these two time and space! !!

- Description from 69shu

Corporate slave Alexander dies with only one regret—not finishing the fantasy novel in his hands. Fate has a twisted sense of humor when he awakens as Alexander Flamingo, the perverted villain destined to be expelled and killed in that very story!Armed with complete knowledge of the original plot and a mischievous “Harem King System,” Alexander plans to rewrite his fate. No longer the one-dimensional pervert of the novel, he'll use his future knowledge to manipulate heroes, seduce heroines, and rise from disposable villain to the true mastermind of this world.The system grants him power through every relationship he builds—but can this calculating reincarnator use his second chance to avoid his predetermined death and become the ultimate Harem King? One thing's certain: this story won't follow the original script.

A minus’ hand that fails every singer he put his hands on, Kang Yoon.

She was the Fifth Young Miss of the revered General’s Residence, but was seen to be useless as trash. Promiscuous and flirtatious to a fault, she was finally killed by mistake under the hands of the attendants of the man she was chasing; She was a genius favoured by the Heavens but ultimately murdered by an insidious plot and all who shared her bloodline pursued and exterminated which caused her to lust for revenge to be paid in blood. The day the genius had unwittingly taken up the body of that useless trash and opened her eyes, her fate had completely changed!!!

Refining elixirs and the smelting of weapons were tough?
That did not daunt her.

Beast Tamers were rare?
She had easily gained the title of Emperor Beast Tamer!

Forced marriages!?
Men being arrogant because they are good looking?
She stretches her hand out and easily pulls devilishly handsome men to her: The Demonic King brothers would easily take their place. A devilish glance, a slight shimmer of movement, and that man would suddenly disappear the next moment. He turned back around, his devilish smile alluring: “Let’s continue with the topic, let’s have a child!”

This is another interesting story with transmigrating and very fun filled characters that will delight you.

- Description from Novelupdates