Heaven and Hellfire Compiled - Chapter Three: Open Water

Ham Dani, a normal student whose hobbies were to read novels.

One day she woke up and find out that the girl next-door is as beautiful as a web novel protagonist.

And in school, there was the introduction of ‘The Four Heavenly Kings’.

The world changed into a web novel just over night, and Ham Dani’s role is heroine’s childhood friend 1!

“I just want to live normally, but why is everyone doing this to me!”

Due to a strong fate ‘The Four Heavenly Kings’ and the heroine entwines Dani’s everyday life.

And the results are?

Maid, older sister, younger sister, and even mother, all of them.

Emperor Gabela: Imperial legions are unstoppable on land.

Great Orc Chief: All the warriors of the tribe can count as ten.

Jade Realm Elf King: The forest ranger has never missed a shot.

Chairman of the Horn Bay Alliance: The alliance fleet is the undisputed ruler of the sea.

A mysterious organization: The prophesied era will finally come.

Paul Grayman: I am not targeting anyone. Everyone here is rubbish.

Start the journey of guns and cannons crushing the low-magic plane…

(This is an old-fashioned story about climbing a technological tree in another world to farm for hegemony. The author has limited knowledge and may make some mistakes in technical details. Criticism and corrections are welcome)

- Description from novelbuddy

A modern-day antihero, who was infamous for his devious acts, dies in an explosion meant to take down a powerful criminal syndicate. Waking up in a world of sword and sorcery, he finds himself possessing a fragile, powerless body with a strange “System” that seems broken. Initially thinking he's doomed, he learns that by pretending to be weak, he can manipulate others into revealing their secrets, granting him abilities they possess. As he rises in power, he discovers that the System was intentionally sabotaged—by none other than his own future self.