'How exactly would an entire forest disappear overnight? ' Tobirama 's tone was heavy with skepticism and Izuna rolled his eyes at him.

'Well obviously it can 't but that 's not the point! ' Izuna said. 'It was a genjutsu. They

believed

that the entire forest was suddenly gone and that 's what was important at the time. ' He crossed his arms and nodded once as if his words had ended the discussion. Tobirama raised an eyebrow.

'How could they believe such a stupid thing, though? ' he asked. 'It 's not believable at all, not feasible. '