Manga wo Yomeru Ore ga Sekai Saikyou ~Yometachi to Sugosu Ki mama na Seikatsu~ - Chapter 12: World War Cockroach

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

What would you do if you were told you only had five years to live?Aster Mistral, suffering from an incurable congenital “disease” that saps life force out of his every breath, decided to fight with all his might. Waking up into the future, 2,500 years later, he embarks on a quest to find a cure for his ailment!“My target! To find the Panacea on the 1,000th floor of the dungeon!”Together with trustworthy allies, he forges a path of blood and corpses, building his foundation and increasing his level! However, he can’t stay in dungeons all the time, as he has a duty to fulfill.“To raise the human DNA average of the world, the government wants my seeds?!”Follow Aster on his laidback journey of fighting monsters, courting girls, escaping adversaries, and discovering secrets about himself!

An ordinary academy boy, Baiyunlou, had to meet the opportunity to embark on the road of self-cultivation.

It is Baiyunlou’s lifelong wish to sit in the small building and watch the clouds and clouds, and wander around the world to taste the red dust and fireworks.

However, the catastrophe is approaching, and the only way to rise up is to draw out the sword, for the thought in the heart, for all living beings in this world, to cut out a life.

A young man by nature, never forgetting his original aspiration, and comprehending the Dao in the mortal world.

Step by step to the top of the fairy road, to explore the truth of the heavens and the world…

“Fellow daoists, come to the small building to drink a cup of tea while you are free in the world of mortals~”

- Description from novelbuddy

In the past life, he was an aerodynamic engineer of a well-known company, and in this life, he is a college student of a famous school.

When the two identities are perfectly integrated, what sparks will appear.

His life experience is also slowly uncovering the mystery, whether he can beat the tycoons of this era, and whether he can stand at the peak of world business.

- Description from novelbuddy