MTL - Shenhao’s Salted Fish Life - Chapter 831 Is it shabby?

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.

“Love Tripped Into My Room: I Just Wanted Peace, Not Panties”Kaito Tenma just wanted a normal life. Wake up, eat toast, avoid drama, and maybe—just maybe—confess to his beautiful, blunt childhood friend, Riko.But fate sucker-punches that dream into space when a half-naked girl crashes through his ceiling and declares his room as her new home. Now he’s living with Yuna, a mysterious (and dangerously clingy) bombshell who thinks clothing is optional and personal space is a myth.From lewd accidents to jealousy-fueled misunderstandings, Kaito’s life spirals into a wild, hilarious mess of high school chaos, horny misunderstandings, and girls who seem way too interested in ruining his peace.He didn’t ask for a harem. He didn’t ask for trouble. But trouble keeps tripping into his life—one girl at a time.

This is a story about a legend, of one that can never be forgotten.
Summer, first time down the mountains in 16 years, after being raised by his 3 masters and Fairy sister.

‘Why won’t you follow the Rules of society?’ The rules are the tool made by the strong, so I follow my own rules.

‘Why won’t you just use your brain instead of your brawn?’ Idiot! Have you ever seen anyone use their brain, to get back at an ant that bites them!? No, they just casually step on it.

‘Oh, everyone says you’re a first-class beauty huh?’ well, I’m sorry but even you are not qualified to be my wife. Only a ‘Summer class beauty’ is worthy enough!

‘My enemy is sick?’ Oh, don’t worry, even if you’re on your last breath and I feel it’s beneath me to slap shot you dead. I’ll just fix you up and then beat you!

‘Who am I?’

“I am Summer in the spring, the autumn, and the winter, I’m the world’s first above the heavens!”

Follow me, Summer Day as I step by step become known as the world’s first master, the world’s first doctor, the world’s richest man…… a lot of other world’s number one, but most importantly, The worlds happiest man.

- Description from Novelupdates

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.