You Said I Was a Giant of Light, So Why Do I Still Have to Pay the Electric Bill?

I went bankrupt and sold my house. I, Liu Yiyi, finally summoned my very own god on Awakening Day! That day, golden light blazed across the sky, the world itself lost its color, and an ancient giant crossed thirty million years to appear before me! And then... He struck a cool pose, stood one meter tall, and let out a thunderous battle cry at me: “Cha?” Me: “...” From that day on, my life changed completely. Other people's summoned beasts eat magic crystals and drink holy water. My Diga eats household electricity at 220 volts and drinks power banks. Other people's summoned beasts make their owners a fortune. My Diga can bankrupt my whole household in a single night. To support this power-hungry beast, I had no choice but to take him with me and embark on the painful road of working to pay off my debts. Then one day, as a terrifying giant beast blotted out the sky, everyone fell into despair. I quietly pulled out the military-grade nuclear-powered power bank I'd just bought and plugged it into his chest. “Diga, stop sleeping.” “The sun's out. Time to get to work!”