The Game's Extra: Azhriel Odyssey - Chapter 18: Interrupt.

After 20 years of dedicating his life to opera ever since he had quit the performing arts high school, he had failed at an interview. Losing his motivations, Jo Yunjae depended on alcohol to live out his days until one day, he had been sent back 20 years in time, to the day before his high school admission.

In the celestial empire, during the ninth year of the Mandate of Heaven,Chaos reigns across the land, and the people suffer.The royal governance collapses, and western barbarians with their pantheon of gods invade.New warlords arise, claiming territories; the Taiping rebels wreak havoc, leading to widespread misery.Calamities like floods, droughts, earthquakes, sandstorms, tornadoes, acid rain, blood moons, and meteor falls occur in succession.Countless demons roam, strange beings thrive, spirits mingle with the inexplicable, and mysterious phenomena arise.In these dark and tumultuous times, Tao Qian opens his eyes to find himself about to be beheaded at the vegetable market...

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

Yan Heng never thought that he would become a stray dog ​​with disabled legs. No one wanted to look at him, even the woman he loved avoided him. Jiang Wanying, who he used as a stand-in, appeared in front of him in a wheelchair.

She took him to see a doctor and brought him home. She was his salvation and the only warmth in his dark memory.

But her disability and face injury were all because of him.

——When she was pushed to the cliff, he chose another woman without hesitation.
Fortunately, she lost her memory at this moment, and everything can be salvaged.
Note: Yan Heng is not a male protagonist.

Content Labels: Rebirth Face Slap System Modern Overhead
Search keywords: Protagonist: Jiang Wanying ┃ Supporting role: “I am a salted fish after dressing as a wise woman [Quick Cross]” ┃ Others: Finish the text search column~
One-sentence introduction: a surrogate female supporting role, raising a dog to debut
Intention: self-improvement, great virtue

- Description from novelbuddy