Zhan Long - Chapter 1021: Fire Elephant Cavalry

Crossing into the world of Naruto, and acquiring the One Piece system, with all the powers of the world of One Piece, swordsmanship, devil fruit, domineering.

-Do you think that your fire is very powerful? I have the burning fruit.

-Do you think that your thunder is very powerful? I have a thundering fruit.

-Do you think that your otter is very powerful? I have the frozen fruit.

-Did you said you want to die? Don’t worry, I also have a nickname: Death Doctor.

- Description from Novelupdates

This is the tale of an earthling, who transmigrated as a dying third-rate god but somehow rose through the ranks, gaining followers and eventually causing the Fourth Great Apocalypse.

One day, Saijō Haruto was forced by the Evil God of another world into reincarnation, and his soul was cursed.He was reborn into a world of swords and magic.In this world, one can become stronger by raising the level of their combat occupations.Unfortunately, Haruto cannot raise his level because of the curse.Haruto felt hopeless.However, because of the Evil God’s miscalculation, Haruto obtained an inexhaustible supply of magical power.This is the tale of how a Sage—cursed to have a “Locked” Status—managed to reach the pinnacle of strength by the effect of the curse.

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.