Story of The Ancient Demon King! - Chapter 100.1: A Monster That Eats Away at Fragile Hopes

The world of Wageah was vast. It was filled with ancient magic, fallen gods, legendary mages, and exciting adventures.Earthlings summoned there gained godlike power.Zeus, Odin, Count Dracula, the Monkey King. All of them were humans who returned from Wageah and became legends on Earth.But my class and I, who were summoned to Wageah?We were enslaved.We were used, discarded, and left to die.But fate gave me another chance.I woke up as a newborn on Earth with all my memories intact. And soon after…[Awakening Supreme God's Treasure: Shadow][System Boot Successful]I gained strongest weapon in existence. [Shadow]. The treasure of the Supreme God.This time, I’ll grow stronger from the cradle. And when I return to Wageah—I won’t be a slave.I’ll be the shadow that devours the gods.

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

Mo Tianliao was a master weaponsmith and a demonic cultivator. When news spread that he was about to complete a divine weapon, cultivators from both the demonic and orthodox sides chased him down and killed him. In a stroke of luck, he managed to possess a new body and was reborn.

So what was the first thing on his mind after his rebirth? Avenging his death? Taking over the world?

Mo Tianliao: I have to find my cat!

—
Mo Tianliao: Why won’t you let me hug you? You used to be my cat!

Master: (unsheathes claws)

Mo Tianliao: Ahaha, this disciple has too much respect for Master, this disciple can’t bear to let Master walk on the ground!

Master: (lifts paw, sends disciple flying)

- Description from Novelupdates

You take up a student career.

Student career upgrade to lv.7

Acquired skills: primary school knowledge, junior high school knowledge, high school knowledge.

You take the college entrance examination,

You got a perfect score.

Your basic occupation has been upgraded to lv.9, and the job transfer system has been activated.

You change jobs to become a scientist, you gain R&D skills

You use research and development skills to get space fortress construction technology

You use R&D skills to gain starship technology.

You are invincible.

- Description from novelbuddy