The rising of the Slytherin heir || Yoonseok

In the setting of Hogwarts in the early 1940s Yoongi Min Rosier, a pure blood Slytherin, just tried to survive his school life in Hogwarts like any other student.
On his journey he encounters new friends.
Friends he can confide in but also friends who bring great destruction and death with them.

or: Yoongi befriends an older prefect and suddenly becomes a part of that boys circle of friends.
His other friends surprisingly are not okay with that at all.