Rewind System: Vampire Harem In The Apocalypse - 100 Chapter 100

When she wandered the border of life and death at the age of three, Cordelia realized that she had been reincarnated into a game she had used to play as a high handed noble girl. A dark future would await her if she fell in love with the Prince. Therefore, for the sake of a normal life, there was no road but to avoid the powerful prince and the heroine…… But just doing that would be boring. She finally was blessed with a beautiful appearance so she resolved to polish herself, firstly by beginning to study herbology…… This is that kind of story.

A novel revolving around being transported to another world with an op system. The mc spends his day chasing skirts and doing missions to level up. A standard journey to the top with lots of girls from various animes and games with a twist of that gaming feel (hunting mobs, doing missions).

- Description from novelupdates

Tang Hao was an honest man making an honest living, but despite all his honesty and kindness, life often looked the other way. Even when he stood up for a man in the streets, he ended up being beaten to a pulp and the man he stood up for? He disappeared. That left Tang Hao with nothing to prove and a hefty medical bill blowing through his savings. However, while he lay unconscious in the hospital, he could feel a warmth coming from the jade pendent he wore as it began to feed him with a trove of priceless information. Now discharged, and still armed with the same naivety and honesty, what will our village peasant do with this newfound power? Will he go on to conquer the hearts of a hundred women? Will he defeat the mightiest crime lords? Only time will tell, but for now, fate has many whimsical plans for Tang Hao.

A prestigious senior mechanical engineer in the industry, Xu Yi was sent to a world dominated by magic.

In a world with an almost non-existent industrial system, how can Xu Yi display his value?

When magic collides with modern technology, when magic merges with machinery, that is the beginning of this story.