Devouring The Heavens - Chapter 292: Dragon Thunder

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

as a gamer, who knew the powers will be diversified in the world of Pirates and Navys?this is a story of a person who is thrown into the beautiful, but dangerous and horrendous world of One Piece, as the Holder of the System with the Job of a Gamer.

[When you cast a spell 1000 times, the damage of all skills will be permanently increased by +10000. At this time, your fireball spell is equivalent to TNT. 】

[You cast spells 300,000 times, permanently increasing the skill damage to +3 million. At this time, your fireball technique is equivalent to an atomic bomb explosion. 】

[You cast spells 80 million times, permanently increasing your skill damage by +800 million. At this time, your fireball technique is equivalent to a supernova explosion! 】

A global catastrophe is coming,

Lu Cheng returned from the apocalypse and returned to the first day of the disaster to unlock super god-level talents!

Endless Drain: Each time you cast a spell, the damage of all skills will be permanently increased by 10 points!

So, Lu Cheng silently stacked the layers and became invincible before he knew it.

The national war has begun and is besieged by the enemy’s coalition forces? It doesn’t exist. Do you understand the fireball deterrent?

A world-class BOSS with hundreds of millions of health points? I was hit by a fireball, what can I do?

God-level civilization invades and easily blows up the sun? My fireball technique is like the sun!

Until the gods joined forces to blockade and trapped Lu Cheng in the Forbidden Fire God Realm.

Lu Chengcai showed off the other 100 skills: “Who told you that I only know the fireball technique?”

- Description from novelbuddy

The Gura Gura no Mi is known as the strongest fruit in the world of one piece.