Demon Hunter - Book 1 Chapter 3.1

“A black dragon rises from the depths of the South Sea, triggering a cataclysmic tsunami... Flame spirits destroy city after city of steel and concrete, calmly departing from the center of a nuclear explosion... Extraterrestrial deities attempt to dominate the entire starry sea... This is a future world where human technology is highly advanced, and it marks the beginning of a martial arts era that sparks a frenzy of life evolution.Li Yuan, a martial arts student preparing for the college entrance exam, carries the vision of an extraordinary celestial palace where he can observe the starry sea, embarking on a challenging journey in this world.Many years later.“My current flight speed is 122,682 meters per second... My explosive power is... ” Li Yuan zooms through the atmosphere about 180 kilometers above the surface of the Blue Star, his cold eyes fixed on the colossal creature resembling a mythical dragon at the edge of the dim void: “You should be the strongest among all invading demigod life forms.”“Unfortunately, at this moment, I can only be called... a Martial God!”

Reincarnating into another world without having to start from the bottom was certainly a good thing.

However, what if the first place you appear is inside a coffin?

This is what Qin Yuan experienced.

While he had boundless strength, he was already at the end of his age so he had to seal his body.

The only thing he could do was to leave with a Spiritual Body whose strength was extremely limited.

The good thing is that there is a system that suddenly appears.

Ding

[Collect Karma Points.]

[You can buy anything with Karma Points.]

[Use 100 Karma Points to purchase a one week life extension.]
...

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

Nagasawa crossed to Naruto Universe and was bound to Konohagakure.If Konoha is severely damaged and destroyed, Nagasawa’s lifespan will be reduced.He panicked at the thought of the upcoming Nine-Tailed Demon Fox's attack , and the thought of Konoha getting destroyed left him in despair.Fortunately, while bound to Konoha, he can obtain templates of powerful characters.At the beginning, He got the Whitebeard template! Since it's the Whitebeard from the Summit War of Marineford, he can use Tremor-Tremor Fruit's ability and Haki.Facing the Tailed Beast Ball, which terrorized Konoha Shinobi, Nagasawa leaped and shattered the Tailed Beast Ball with one punch!