😋I am very honored to recommend you a few Harry Potter doujinshi novels. The novels with Slytherin as the main character were: 1. Glory to Slytherin: Hogwarts welcomes a third-year transfer student from Beothbatons. From then on, glory belongs to Slytherin. 2. [Slytherin's Prince of Spells: The descendant of an ancient magic family known as the Devil. He is recognized as a peerless genius in the magic world. The spells he invented are enough to make a magic book.] 3. "I Play Druid at Hogwarts": The main character, Druid inheritor Arendrew, receives a letter from an owl and begins an extraordinary magical journey. I hope you like my recommendations. Muah ~ If you need more recommendations, please feel free to tell me.😗