Ainz didn't really need help from Henry and his partner, but he decided the more the merrier.
Just imagine, a single person, alone, is in the enemy's base. Of course, even a fool, even an idiot won't do that. But Ainz did. There's only one reason why.
"Wanna work together?"
"It will be our pleasure, what are our orders?" Henry asked.
"Go downstairs. Wait there. In a few seconds, when my plan actives, huge chaos will break out inside the dorm."
"And what should we do?" Henry asked.
"Hide somewhere and don't let anyone pass through the ground floor. No one, not a single teacher, student, warden, parents should go beyond the ground floor."
Understood, sir Ainz." Henry bowed, "We will act on the plan immediately."
"Good."
"Do you think it was okay to trust Ainz Gown like that?" his partner asked while they were climbing down the stairs.