The first Burst form calc, at least on here. Ryouga pulls a boulder from several meters away using a string and Hilgreitz easily shatters it.
Mass[]
The feat
Hilgreitz: 42 px = 182.88 cm
Boulder: 91 * 98 px = 396.24 cm (R: 198.12 cm), 426.72 cm (R: 213.36 cm)
Volume (Semi-Ellipsoid): 1.89 * 10^7 cm^3
Mass: 51,945.23 kg or 57.26 tons (Class 100)
Pulling Strength[]
Weight = mass * gravity = 51,945.23 kg * 9.81 m/s^2
= 509,582.71 Newtons
Friction Coefficient: 1.05
1.05 * 509,582.71 Newtons
= 535,061.84 Newtons or 54,561.12 kgf (Class 100)
Energy[]
As seen here, Hilgreitz shatters the boulder. Based on the boulder's massive size, this appears to be Violent Fragmentation.
Energy: 1,303,352,919.33 J (Building level)