Dark Lord: Rise to Power - Chapter 13: Siterion- ’The Labyrinth’

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

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

Avery Asteria was far from having anyone's dream job. Family circumstances had him drop out of school and flying around the expanse of space looking for treasure among the discarded trash in an old ship his father had been restoring. It was far from glamorous work, but it was all he could do to earn the money he needed.He was not the only one looking for fortune among the stars, though. One day a score that looked too good to be true led to a run in with a band of pirates. With some quick wits and a bit of luck, Avery managed to escape the worst, but he ended up missing out on collecting the valuable salvage he had his sights on.Having lost a large chunk of his gear in his flight from the pirates, Avery seemed to be truly at the end of his rope. However, a twist of fate led him to discovering an experimental vessel that had been lost to the far reaches of space.With this new ship in his possession, his prospects were looking up. It had everything and more than what any spacefarer could want. And Avery was going to use it to become the leader of the greatest band of mercenaries in the galaxy.

[Invincible Shuangwen] The end times 200 years later.

Lin Xinghai obtained the system, ran rampant in the apocalypse, and crushed all enemies.

Rolling is cool for a while, and rolling has been cool all the time.

Ding! Gain blood power +1

Ding! Gain Genetic Optimization +1%

Ding! Gain firearms skill proficiency.

PS: The creativity comes from the spirit cage.

- Description from novelbuddy