Working as a police officer in Mexico - Chapter 665 - 388: Max-Level Military Doctor

In the face of Thanos and his crowd of alien warriors, Jerry took out his wand:

“Avada Suomin”, “Shenfeng Wuying”, “Fuchsia”, “All Petrochemical”…

Withdrawing the wand, pressing both hands on the ground, a huge alchemy formation was formed on the ground, and countless gun barrels roared like thunder.

Get up and put your hands together, the Dragon Slayer Profound Magic is activated, “Red Lotus Exploding Thunder Blade!”

…

Traveling through the Marvel universe, Jerry gets a bizarre panel that rewards Little Red Star for doing good deeds.

Consuming Little Red Star can go to other magical worlds to learn magic,

Consuming Little Red Star can also refresh your mind and speed up the efficiency of learning magic.

In order to protect himself and his family, Jerry reluctantly embarked on the path of constantly doing good deeds to earn a little red star, and working hard to study and learn magic.

The protagonist’s three views are upright, not a virgin, no brainless, no system, the panel is only responsible for traversal and refreshing, all magic is acquired by the protagonist through learning, and powerful through research.

- Description from novelbuddy

Kurogami Ichiro was desperate because he couldn’t achieve what he wanted when he once started his martial arts path at age of 8!

A former sporting rifle shooter genius transforms into the ‘Juvenile Butcher’. While originally supposed to have received the death penalty, he was instead fortunate enough to have entered a secret and highly regarded armed force, throwing himself into the ‘Nirvana Project’.

After a period of 10 years, he now has time to freely recover. Having trained until he had excellent military and martial skill, he sweeps through various military districts and returns back to his hometown. Under the monitoring of a beautiful female cop, he re-establishes his family’s bodyguard service, protecting beauties and moving unhindered, his achievements causing the fame of his outstanding, god-level bodyguard service to resound across the world!

- Description from Novelupdates

Crossing to One Piece world, he became Roger’s younger brother.