MTL - Shocking the Whole Internet! You Are Not a Psychologist at All! - Chapter 220 Standing at the top of the food chain, not to be vegetarian

Leguna. An orphan. His life changed dramatically the day the thieves’ guild happened to select him for training and development. He would go on to become lifelong friends with a loyal mercenary, the partner of a beautiful magus who was cold as ice, the savior of a mysterious disfigured dark-elf girl with a talent for the Breath, and the unlikely caregiver for a feisty young maiden. And yet, who would be with him to the very end?

Qin Nuo transmigrated into the Great Zhou dynasty, becoming the dim-witted Ninth Prince. As if it’s not enough to be a female transmigrating into a male, (s)he thought that (s)he could just enjoy a life of drinking, eating, and being merry–but no. He ended up being pushed to do something way beyond his abilities and entered the fight for the throne. Internally there is strife among brothers, and a powerful official with great authority; externally there are foreign powers looking to invade, and the discontent of the people that is boiling over. How is he supposed to pave a path through this mess both domestically and abroad? It’s hard to be emperor, and even harder to be a good emperor! This is a story about an emperor farming. While others are farming a field, he’s farming a whole imperial court.

- Description from Novelupdates

“Everyone deserves a happy ending, don’t they?”…In the brutal fantasy RPG Fall of Ares, saving the world came at a cruel price — the deaths of every heroine the player had grown to love. No matter how skilled you were, their sacrifices were inevitable. The game warned you not to get attached.But one young man did.After beating the game and lamenting their tragic fates, he wakes up in its world — reborn as an extra, armed with one mission from a mysterious system:[Change their endings. Let them live.]Now enrolled at Mysteria Academy alongside the heroines doomed to die, he must rewrite fate itself. For every girl he saves, he’s rewarded. But the world resists change. Calamities draw closer. The true enemy — the Children of the Sky — are watching.And one of the heroines… remembers it all.

It was only after Su Yayan's death that she realized that she was a malicious cannon fodder female character who became a scapegoat in a Mary Sue story.