Yamamoto Kirikage did indeed know a little bit of ninjutsu, but not to any exaggerated extent. He could only create some mist around him to interfere with the enemy's vision, while transforming himself into mist to evade certain physical attacks.
This was why he had nearly defeated Rokujuroku Yamamoto.
Yet while they made their move, people outside shook their heads one after another; striking now meant they had already lost the initiative in exploring the mist.
Chapter 381