Minyō no Gyō (literally the Way of the Sleepy Sheep) is one of the Ways of Ryūha Koei Sōgetsu. This allows the user to maneuver multiple objects simultaneously.
Techniques
Shichaku Shitsu: (lit. Changing Room): By slamming his hands and feet hard on a tiled floor, Rintaro is able to send dozens of bricks flying into the air and have them pile themselves neatly into a makeshift wall. This was used to hide the half-naked Ren from sight.