Others are fighting hard but I am the first to show off. I am rated S?

[Ding! The mixed system has been loaded! ]
"As long as you act like a fool and get the lowest F-level evaluation in the trial mission, you can get endless power and unlimited life?"
"Is there such a good thing?"
The Trial Game of All Worlds has arrived, and 100,000 humans on Blue Planet are drawn into this trial of fate.
Risking your dignity and life, completing one difficult and arduous trial mission after another, striving to win a higher settlement evaluation, can you gain nearly omnipotent power?
Li Jing, who has a mixed system, said, I'm sorry, although I may not be able to get an S-level evaluation even if I try my best, and I'm afraid of death.
But wouldn’t it be easy for me to get the lowest level F?
So, when other players were desperately fighting the Nightmare Beast, he took the little girl he met on the road and hid in the safe house to eat and drink.
While other players were fighting bloody battles with powerful and terrifying monsters, he was lying on the bed, drinking iced cola and playing the built-in game on his phone...
What do powerful enemies, hidden side quests, and world quests with rich rewards have to do with me?
Hey, just start and mix it up!
As he was mixing in the trials, Li Jing was shocked when he saw the final evaluation after the trial.
Huh? I was just fooling around, but you said that the little girl I grabbed was actually the master of the Nightmare King?
I killed the Nightmare King and completed the world quest, and I'm rated S?!
Wait, could it be that the built-in mobile game I’m playing is also... ?