I Hide And Farm In The World Of Cultivation To Increase My Proficiency - Chapter 9

After his death, Hang Qing got a system that allowed him to release the halo of Gary Stu (aka. Mary Sue) and conquer the villain in every world.

“You have an unparalleled appearance, a charming body, an irresistible voice, is conquering a villain that difficult?”

“…………… But I’m a f*cking man. “

“It doesn’t matter getting bent a little, you’ll get used to it.”

King of Swimming: √

Cold Singer Pop Star: √

Murder Movie Abnormal Boss: √

Most Beautiful Alpha: √

Ghost Imprisoned in the Castle: √

- Description from Novelupdates

Vahn was an atypical youth. Due to a rare mutation, his blood had the potential to target and attack ailments within the human body. Touted as a universal cure, people had elevated his status above the norm and given him the classification "Panacea". In the media, he was hailed as a great hero who would usher in a new era or human wellness. However, behind the scenes things weren't so bright. Being a unique individual, Vahn spent his entire youth locked up in a lab with various scientists and research teams using his body and blood to perform endless amounts of experiments. The only solace in his suffering was the various anime and manga made available to him between experiments. He often imagined himself as the protagonist in a world of his own, finally in control of his own destiny. For years he nurtured this desire, until at the age of 14 he died when an organization had tried to kidnap him from the lab...

Ling Jing Shu lived with humiliation and heavy burdens all her life, and only at the moment before death, she suddenly woke up and repented. If god gives her a chance to live for a second time, she will say three words to the man who let her down: You Get Lost!!

- Description from Novelupdates

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy