Toaru Majutsu no Index - Volume 14, Chapter 1: A Too-Quick Rate of Change. In_a_Long_Distance_Country.

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

The whole life of Li Jingzhi could be concluded with one sentence: His ups and downs in life is all due to Si Luoming. When he was young, he dreamed to be a person like him…Till the end she finds that he hated her, especially when she “murdered” the one in his heart indirectly. Since then, he has never hidden his hatred for her. And then she knows her life has already been messed up all these years…

This legend tells the tale of the protagonist, Kuroki summoned to protect the demon king from the hero.

Kuroki, unbeknownst to him, suddenly came to another world. He was summoned by the demon king, Modes. The territory which the demon king overrules was in the midst of being destroyed because of the hero. He had no choice but to bow before Kuroki.

“Please save us, Savior Dono!”

Kuroki nodded, deciding to save the demon king due to an unexpected turn of event.