After Being Forced to Become a Bigshot, I Only Want to be Normal - Chapter 726 - : Put Me Down

Hadica was built around one of five Towers, an infinite structure filled with floors of monsters, magic, and treasures that the city plunders like clockwork. Most of the city, at least. Growing up in Westhill, Micah's family abstained from all of their Tower's bounties. He became an [Alchemist] at an age younger than most and just wanted to level in peace, but soon ran out of mundane ingredients to brew into potions. Ryan is a budding [Fighter] with the strange ability to mimic beasts, including monsters, but he doesn't understand it or even himself. After a Tower climb goes horribly wrong, their lives and the world around them begin to change as they try to figure out who they want to be.The Salamanders is a slow-paced story about characters growing up in and exploring a fantasy setting. It updates sporadically. Please mind the tags.

A fighting genius.

On modern-day Earth, An Lin seems to have been abandoned by God.
When his father suddenly disappears, An Lin is left with his father’s immense debt, putting his life at risk.
After being forced to a rooftop by his pursuing creditors, An Lin is unexpectedly swept off his feet and brought to the ground safely.

After learning that he was saved by an Immortal, An Lin is gifted, seemingly out of pure generosity, the ‘God Of War System,’ and a pass to a new realm.
Follow An Lin as he experiences a whole new world of legends, meets many new friends, acquires legendary weapons and tools, and starts on his path of becoming a powerful cultivator. There is never a dull time in An Lin’s new life with his ‘great’ new system!

- Description from Novelupdates

I was reborn into a chaebol family.Into a time with no cryptocurrency, no internet, and nothing else.