MTL - Evil Wang Pampers His Ghost Doctor Fei - Chapter 2 Meet a beautiful teenager

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

“You are chosen to be reincarnated in this era.”

A plain high school school boy involved in a truck-kun incident and met a goddess upon waking up.

He was given abilities that he wishes and got reborn as a son of an aristocrat family. To found out that his parents were actually the strongest couple in the continent.

But that's not the thing that he was shocked for. He discovered that both his biological parents were actually women?!

With his cheat skills, he will live his life as much as he pleased and build a nation before he realized it.

Traveling through different worlds – this is unscientific!

Get cheats – it’s science!

…

This is a simple story. An ordinary person lives in a different world, farming and raising flowers, studying unscientific science in his free time.

until the end.

- Description from novelbuddy

I got transmigrated into a game I’ve never seen before.

I thought it was a top-notch RPG and spent 30 years on it.

I retired as a war hero and planned to spend my remaining time leisurely.

But it turns out, it was an academy story?