In JJK With Naruto Powers - Chapter 122: Kazuma’s Plan

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

In a modern world, a professional assassin was murdered by her beloved and found herself revived in an ancient world as a general’s daughter with a weak physique. She was engaged to a prince, but because she did not have a nice appearance, her fiancé and sister attempted to kill her. Although she had to struggle to survive, there were also those who unconditionally loves her that supported her in her time of need.

Wait right there!!! You stopped?! Good. Now, read below. I know what you guys are here for, so let me make it clear from the beginning, this novel has everything you want to see, like... Milfs, Virgins, Netori, No Yuri, Act of keeping the bloodline pure, Oyakodon, Succubus, Vampires, Elves, Queens in the harem, Princesses, Gilfs, Demonesses, Angels, Goddesses, Dragons, Phoenixes, Dryads, long seggs scenes, Dual cultivation, Cultivation, System, Yandere, Overpowered MC, and many more. This was something for the more cultured people, but besides these, this novel also has... wanna guess what is it? Hmm...?! Yep, you got it! A good story, that won’t make you feel bored, if you don’t quit in the beginning that is. It has many plot twists and many new concepts that you won’t see in any other novel.

This is the story of a young man who was reincarnated as a dragon with a near-insatiable curiosity. Initially sparked by questioning his own reincarnation, he quickly gets lost in the endless world of magic, using his deep understanding of advanced sciences to learn the laws and properties of a new type of energy known as mana.However, soon enough, the table would flip, and he would begin using that very same energy to expand his knowledge of science, to the point that he would begin questioning his own understanding of the world.Although not his original intention, with the combination of his intelligence, expanding curiosity, and the 'miracles' that occurred to allow for his existence, he quickly found himself climbing the mountain of strength as if it were a small hill before eventually climbing to a point where it seemed as if he himself was the peak itself.Even if.. that was never the case...There is mild gore, and profanity is 'censored' toward the beginning, but not later in the story.