You were restrained to a medical chair through hours of experimentation, you had given up the fight and were in absolute agony.

Churono: "It seems they've used up all their strength."

Overhaul: "Fine then.." He sighed

Overhaul: "I suppose it's about time for a reset. Let's go back to square 1."

He took off his glove and reached out to touch your face, activating his quirk to disassemble you and then reassemble you so he could continue the experiment.