HP Slytherin's Twin Snakes

On September 1, 1971, Ryan Lost met the boy for the first time on the Hogwarts Express. When the black-haired boy wearing an old coat and a red-haired girl walked into the cubicle, the first thing they looked at was not the person, but the ancient book on his lap. "Can you lend it to me?" Ryan agreed, just a casual promise. Until he discovered that the book that had been returned was filled with dense annotations - some of which he had not even thought of. And his potion talent surprised Ryan even more. Later, he saw that the hand that wrote the notes and made the perfect potion was stepped into the mud. He handed over a piece of parchment with only a modified spell on it. Parchment became their only intersection. Later, they became Death Eaters. They stood in the deepest part of the Dark Ages and became the only kind of each other who did not need to disguise themselves. … One has been watching for seven years, and the other has been hunted for seven years. One never lends a helping hand, only passing the knife in a corner where no one can see it. One never said thank you and only wrote an extra line of comments in the book that was returned. They never say trust. But some words are more important not to be said than to be said.