MTL - I, The System Maker! - Chapter 10

The leaves of the chess game beside Lanke, and there is no one playing chess among the old trees
Xing caused Tian Yuan’s first son, and then looked back at the vast mountains and seas
When he woke up, Ji Yuan became a half-blind beggar in a dilapidated mountain temple.
A real person has a sword and a magic stick has a mouth, which is the foundation for Ji Yuan to settle down in this terrifying world.

- Description from novelbuddy

In her previous life, Gu Tong was blind to people's true natures, and died unjustly, becoming the number one venomous woman scorned by all.After her rebirth, Gu Tong tore apart her cousin with her bare hands, shattered the mistress on her chest, and stewed the scum in an iron pot, becoming the first Doctor who brought aid to the world; none who owed her could escape.Her happy and perfect new life officially began, and Gu Tong shouted her loud slogan, “Kiss, hug, lift high, husband, let's have a baby, oh yeah.”

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!

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?