God Invasion: It's awesome to save the world with five problematic girls! - Chapter 11 - 5. She said it was to add contact information.

[You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be.

The once revered Alchemy Emperor returns to his fifteenth year. In this lifetime, he not only seeks to rectify all past regrets but also aims to achieve the pinnacle of martial arts!Compared to cultivation techniques? My lackeys have divine-level technique in hands.Compared to elixirs? My top-tier elixirs are fit only for feeding dogs.Talents? Any genius who encounters me will find their fate crushed!Prosper under my lead, oppose me and meet your demise!

A lifetime ago, Chu Xun was shackled and thrown in jail on false charges. For three whole years, he suffered extraodinary torment from his cellmates every day. Even though he had escaped death many times, he still died from his cellmates’ fists the day before he was to be released.

After death, Chu Xun transmigrated to a different world of cultivation, where cultivation was the one true path. Carrying the weight of his hatred, Chu Xun began to cultivate in hopes of becoming an Immortal Emperor, who could manipulate heaven and earth and travel through time. After painstaking cultivation of three thousand years, he succeeded. Then he sacrificed all his cultivation without hesitation and returned to the day before he was to be released.

This life, he wanted to find out the truth and the one behind his murder in last life. He would continue to cultivate and strengthen himself so that the tragedy would not repeat itself. He wanted to master his own destiny.

In this life, what people would Chu Xun encounter and what experience of love and hate would he have with them? What difficulties would he encounter and how would he overcome? The answer is the book.

- Description from Novelupdates

Li Xiaofei, thrust 500 years into the future, finds himself as a young orphaned man in a harsh, post-apocalyptic world. Raised by a woman only slightly older than himself in the unforgiving slums, he quickly learns that survival requires both strength and cunning.In a world ravaged by alien star beasts, where gangs rule the streets and political factions vie for control, chaos is the order of the day. Amidst this turmoil, Li Xiaofei must carve out his own destiny. Armed with the mysterious Moonlight Treasure Box, he embarks on a perilous journey to make a name for himself and protect the ones he loves.Will Li Xiaofei rise above the chaos to bring peace to his world, or will he be consumed by the darkness that surrounds him?Official BlurbThe star beasts invaded, and Earth’s civilization collapsed. A young man, wielding the artifact Moonlight Treasure Box, drew upon the legacy of three thousand martial arts techniques from various worlds. He protected humanity, won the hearts of beautiful women, slew star beasts, suppressed myriad races, ruled the universe, and commanded the heavens. In the vast cosmos, he was invincible!