Western Crossover: I Heard I'm a Snake

A bright, sunny day dawned. The protagonist went to the market to shop, then returned home to find their father sitting there with a look as if he’d eaten something vile. A black-haired man sat across from him. Their father fixed the protagonist with a piercing stare, and the protagonist shuddered. “This is your biological older brother. His name is Salazar, and his surname is Slytherin.” What the heck! The protagonist was stunned. So this was the Harry Potter world! Note from 2017-04-10: This work is an enormous unfinished pit. Jump in at your own risk. The setting does not match authentic medieval history and is for entertainment only. Note from 5/3: Revised to a crossover fanfiction based on American comics.