MTL - He is From Great Sea of Stars - Chapter 10 Sisters in the 1970s,

Chen Che traveled through the strange world of immortality with an overload plug-in.

Every time he enters the overload state, his body will experience some discomfort.

The training speed of the exercises has been improved, and the weak cough.

The speed of boxing comprehension increased, and the arm was red and swollen.

The speed of supernatural power cultivation has increased, and the headache is splitting.

…

Chen Che, who was suffering from an external illness, chose to practice in a low-key manner.

It was not until the first year of Daozong that the new emperor ascended the throne and began to rectify the dynastic order, killing traitors…

Then something unexpected happened!

What?

The father I never met turned out to be a big traitor?

It also affects me to be exterminated by the nine clans?

never mind! Stop pretending!

I see who can kill me!

- Description from novelbuddy

Zero, a 35-year-old mercenary, after being betrayed by one of his teammates who told his enemy about him. He chooses suicide so that he can kill his enemy and his traitor teammate. After that, he was reincarnated into the world of magic, in the body of an 18-year-old teenager with the same name as him. However, his body does not have mana or the talent for magic. But with the help of the cultivation system, he has unrivaled power in the world and has a harem of beautiful wives.

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

To Producers, the two of them couldn’t be more drastically different voice actors.