The Sun God

Once, in a small village on the outskirts of civilization, there was a cult that worshipped the Sun God. They had been performing their rituals for centuries, hoping to appease the deity and receive his blessings. But as time went on, their rituals grew more and more depraved, until they were willing to do anything to please their god.
One summer solstice, the cult gathered in a secret location deep in the forest to perform their most ambitious ritual yet. They had constructed a massive altar made of stone and wood, and they had gathered all manner of rare and exotic ingredients for their sacrifice. As the sun began to set, they began their chant, calling upon the Sun God to come forth and grant them his favor.
At first, nothing seemed to happen. But then, as the cult continued their chant, a blinding light filled the clearing. When the light subsided, they found themselves face to face with a being of incredible power and beauty. He was a man, tall and muscular, with skin that seemed to be made of pure light. He wore robes of shimmering gold, and his mask depicted the smiling face of the Sun God.
The cult was overjoyed. They had summoned the Sun God himself! But as the being approached their leader, something changed. The man's skin began to darken, his robes becoming torn and stained with black and grey. His mask shifted, the once-smiling face now twisted into a sharp-toothed grin. The being grabbed the cult leader by the head, and with his nails, he gouged out the man's eyes.
The cult was terrified, but before they could flee, the being turned on them, his godly powers now turned to destruction. He tore through the cult, killing them in the most brutal ways imaginable. Only one member was spared: a young boy, barely a teenager.
The being used his powers to freeze the boy in place, and then, with his nails, he carved a smiling sun tattoo into the boy's skin. The cult had released a god into the world, one that thirsted for blood and flesh. The being vanished, leaving only destruction and death in his wake.