S-Rank mission.
In the game, Leo had always prioritized those missions. They were difficult and had high rewards, which meant he had the chance to get new skills, items, or weapons that could help him improve his strength.
But, he also knew that they were dangerous.
An example of a S-Rank mission was the time he had to fight a city full of cyborgs with the latest weapon technology controlled by a wild artificial intelligence trying to destroy the world and massacre humanity.
That mission took him weeks, and he was almost killed several times. The resources spent were massive, and he almost had to use real money to buy a weapon or skill that would help him finish the mission.
In the end, he managed to stop the AI and saved the city. But, it wasn't a smooth ride.
'Now, this is a real-life version of that mission. Except, the reward is a future and not a rare item.'