My Enemy Became My Cultivation Companion - Chapter 27 - 17 Why Does He Take a Concubine?

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

After reincarnating, he realized that he was endowed with a miraculous game-like system, which enables him to increase his own stats and transcend the limits of the human body. This system even has a game-breaking ability to save and load in real life!

In this new world that’s akin to a 2-D game, he just wants to enjoy life and head for a glorious future… However, he is quickly embroiled in a complex plot. Can he unlock his true potential and utilize his system to break the shackles that confine him and discover the truth about his previous body’s circumstances?

- Description from novelupdates

'Divinity Online'. The new breakthrough in the Full-Immersion Virtual Reality technology. After decades of work, Divinity Corp had achieved the impossible. Creating a massive video game world that people can enter and live in as if it were Earth. Their goal was clear, to create a world other than Earth that we can call home.A place where the laws of reality vanish, and the true ceiling of power shifts completely.Naturally, the shockwave Divinity Online created across the entire globe was unlike anything else. Every single person has heard of it, even those who have had no interest in video games before.Giant corporations and even governments immediately rushed to start planning to invest in this new world and just like that, billions of people had their eyes on one single date: the 19th of July.***Arthur, like everyone else, had heard of the game and was as excited as everyone else to try it, if not even more. With how much he grew bored of his life on earth, this fantasy world was like the divine call he had been searching for. However, there was a very small problem.He had no money to buy the machine required to access Divinity Online. His wretched life had turned him into a broke teenager with no parents, and no relatives. But, by some kind of luck, he got his hands on one of those machines.Not knowing what was awaiting him in that world, Arthur was simply seeking one thing... A new opportunity in life and to find a purpose he could work for when he had none so far.[Welcome to 'Divinity Online'.][Assimilation Started...]

Su Yun was a prodigy, blessed by the gods. However, life is never so easy. Soon after reaching 6th stage in spirit novice realm cultivation, his progress stagnated due to incurring a rare medical condition.

A few years go by, and Su Yun has spent all his time gambling or drinking, wasting his youth away, but one day everything changes. Qing Er, the only one who stood by him was forced by his clan to be a sacrificial bride to someone she didn’t love, only to be executed by the groom on the wedding night for fleeing. Burning for revenge, he scoured the world for a cure for his rare medical condition from both righteous and villainous side.

Countless years go by, and finally Su Yun not only found a way to cure his rare condition but also gain immense knowledge on a myriad of martial techniques.

But before he could fully cure himself, he received news that the groom suffered an assault that damaged his internal organs. Rather than wait for decades to become fully cured, Su Yun decided to hatch a plan for the assassinate of the groom. Unfortunately, he underestimated the strength of the groom’s family and was killed instead.

Then he regains consciousness. He comes to a realization that he went 15 years in the past. This time, he vowed to protect Qing Er, but first he must cure his rare medical condition. Will he learn from the mistakes of his previous life or is everything still set in stone?

- Description from Novelupdates

I became a heroine who dies during the protagonist’s awakening event.