"System, do not let them come. NO matter what." Jin said once more and whatever he said this time was final. He was not going to entertain any 'Let me prove myself! Kind of bullshit.'
And obviously, that really happened as Lein and Su Zhen came forward asking to aid Jin in his endeavour against the Mutated Undead Warrior. Grandma Yuan even asked Jin not to be stubborn as she was not in the position to command him despite the amount of scolding and punishment she gave Jin for not being responsible enough.
"We promise to not be in your way. Besides, the Italian Exorcists know about us. If you were there alone, then they might think you are somebody with evil intentions." Su Zhen begged to go to prove her worth once more. He did not see her be so determined as compared to the last time he saw her.