MTL - I Was a Top Student In Conan, But I Was Actually An Onmyoji - Chapter 43

After accidentally falling, she actually finds herself bound to a Second Female Lead Counter Attacking System!

When I was 15-years-old, during the year that I graduated from middle school, my father told me this.

Killed by a Sage Emperor and reborn as his 13 year old self, Nie Li was given a second chance at life. A second chance to change everything and save his loved ones and his beloved city. He shall once again battle with the Sage Emperor to avenge his death and those of his beloved . With the vast knowledge of hundred years of life he accumulated in his previous life, wielding the strongest demon spirits, he shall reach the pinnacle of Martial Arts.

A decision can destroy the sun, moon and stars. A finger can kill the Heavenly Overlord. While chatting, the Heaven and ten worlds can be annihilated.