The Last Calculus Wizard

The Calculus Kingdom has entered a state of civil war. The kingdom's two largest houses, The House of Derivative and The House of Integral, are fighting over the existence of constants. While the Integrals want them protected, the Derivatives have sworn to destroy them at all costs. Then one night, the powerful constant C was kidnapped by the Derivatives. The Integrals have called on the last calculus wizard to save the day and rescue the constant C