User blog:Muhammedmco/Strike The Blood - Wrath of The Fourth Primogenitor 1

Introduction
Feat in Question

Calc
Area of Itogami island = 180 km^2 = 180000000 m^2.

Plugging the area into this calculator:

Volume = 227082000000 m^3.

There were concrete, steel, and water on the island.

Density of steel = 8050 kg/m^3.

Density of concrete = 2400 kg/m^3

Density of water = 1000 kg/m^3.

Total Density = 11450 kg/m^3.

Mass = Volume * Density.

Mass attacked = (227082000000)*(11450) = 2.6000889e15 kg.

Velocity = 4400000 m/s (Since the island was attacked by pure lightning).

E = 0.5*M*V^2

E = 2.51689e28 Joules = 6015.511472275 Petatons of TNT (Multi-Continent level)

Conclusion
Wrath of The Fourth Primogenitor 1 = 6015.511472275 Petatons of TNT (Multi-Continent level)