Toaru Majutsu no Index: Genesis Testament - Volume 1, Chapter 4: Interaction with Another World, the Starting Point — “R&C OCCULTICS Co.Ltd.”

In this world, people are granted a power said to come from the heavens, a mighty weapon tied to the soul of humans. Those who receive these magical weapons fight against monsters to survive, driving the economy of this world.Lian is just an ordinary boy until his world is turned upside down when another race takes away what matters most to him: his family. From that moment, follow Lian's journey as he seeks the strength to avenge those who killed his family and uncovers the truth behind his power.

What is the experience like after transmigrating into the novel’s foreordained miserable cannon fodder?

Su Zui, who had only ever treated other people as cannon fodder, expresses——

Your father is still your father.

Winning just by laying down, system silently gave his family’s host a call: Papa 666.

Boss: Be good. A single parent family isn’t good for the child. Call me papa number two.

System: ???

Even though the roles assigned are all definitely touching and inevitably miserable cannon fodder, this does not hinder Su Zui’s path on oppressing main leads to the point they question their life.

- Description from Novelupdates

In order to chase down and kill her own murderer, Xia Yichu reached an agreement with the 233 system, and she will travel through the world to complete the task, and The 233 system helped her return to the original world.
However, Xia Yichu often encountered a broken BOSS while he was on his way to do the task. He did n’t agree with each other on the wall, the bed, the various patterns, and kept talking.
System: Please use one word to describe the other person’s impression in your heart.
Xia Yichu: Competent.
Shen Jiaye: Mine.

- Description from 69shu

At 35, Lin Zhi finally died from exhaustion on the delivery table!In her life, she was never married or had children, faced with a difficult and bumpy fate, but fortunately, she successfully delivered 3000 babies.After death, she arrived in hell, where King Yan, appreciating her merit, allowed her to be reborn at the age of 20, and even bestowed her with a pair of... Holy Hands for delivering babies?!Lin Zhi was somewhat bewildered, she didn't want to be a midwife again!“King Yan sir, that... actually, you could grant me a cool, super-rich, devastatingly handsome husband who would love me for a lifetime.”King Yama said, “Lin Zhi, I think you'd better come back to hell with me!”