The Simple Life of Killing Demons - Chapter 56Book 12:

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

Miss Su had lived a sheltered life focused on learning the three obediences and four virtues since she was young. Before she could marry, she was killed by the autumn rain. Reborn as a peasant girl in the 1980s, Su Danhong became a wife and also unexpectedly got a spiritual spring! She didn’t expect that her previous life’s embroidery skills were master level embroidery skills in this life? The master was not a master. Miss Su didn’t care. What she cared about was that she could use these skills to make money and not worry about clothes and food. Growing precious flowers and plants, embroidering beautiful mountains and rivers, and enjoying the simple life.This is the story of an ancient girl from a noble family who went through rebirth to the 1980s where she farmed and gave birth.

As the youngest son of a top chaebol in the Blue Star entertainment circle, Lin Zhibai thought that his life was just to eat and wait to die.

Until that summer.

The system fell from the sky, and he awakened the memory of his previous life.

“So I’m from Earth?”

- Description from novelbuddy

After Xia Feng transmigrated, his heart was mysteriously removed.In its place, a defective demon heart capable of sustaining life only for eighteen years was implanted.This is a magical heart that can sync with the power level of its target.To stay alive, he bound himself to the ultimate villain of the future, a Destructive Witch who was destined to destroy the world.The stronger the Destructive Witch becomes, the stronger he becomes!Thus, Xia Feng realized, it's not my fault for stirring up trouble: “Miss Witch, I admit you're strong, but not strong enough!”