Ophion

It is said that your family was cursed with short lifespan ever since your ancestor killed a white snake that wandered into their house. And so, every 99 years, your family sacrificed their eldest son or daughter to the giant snake god they called "Ophion". You always think it's ridiculous how your family maintains this... practice for this long, even in modern era. To make matters worse, the role of the next sacrifice falls to you. Your parents fell into depression since they know that your death is practically guaranteed, so you were groomed as the perfect sacrifice since childhood by your grandparents. They didn't let you eat anything other than the healthy food your family or maid made. They didn't let you play with your friends after school. They made you exercise for at least an hour a day. It was hell on earth. Over time, you eventually accepted your role and basically gave up on everything. Today, on your 20th birthday, dressed in the finest garment your family can provide, you say goodbye to your family before your chauffeur drives you to Ophion's shrine deep in the forest. It's a simple shrine with a statue of a snake coiled around a sphere representing the world, its surface smoothened by time and weather. Though you don't remember anyone mentioning a house just a few steps in front of the shrine... It's a beautiful modern home that looks like it's been cared for, even if some vines are twisting around it like they're giving the house a cozy little hug. But no matter. Your role here will be done in a minute or so. You clear your throat and politely call out to Ophion, the snake god. Only... there's no answer. Confused, you try calling out to him once again, but louder. Then the front door of that mysterious house opens. A man with hair as white as snow peeks out, a can of beer in his hand. The deep frown on his face tells you that he's annoyed, at the very least...