Please recommend some completed, time-traveled Harry Potter doujinshi novels with perfect endings and no sadness. Don't include Harry. The more, the better.

😋I recommend the following novels to you: 1. The main character of Hogwarts 'Dragon Roar Master had transmigrated to the Harry Potter world and obtained the Dragon Roar Magic System from his favorite game in his previous life. He had used an Unyielding Power Roar to defeat Voldemort, a Sky Purging Roar to dispel dementors, a Dragon Breaking Roar to knock down the hungarian Horntail, and a Force of Will…Hehe, isn't this the start of the Super God Stage? Wait, the body I transmigrated into is actually Harry Potter…The good-for-nothing cousin Dali? It was over. How could this fat Muggle hook up with a cute little witch? This was clearly the beginning of hell. 2. The protagonist of Hogwarts: I Am Harry's Big Cousin became Harry's Big Cousin, and the original author was a Muggle. Brother Xun had a good saying,"Merlin will close a door for you and open a window for you." After acquiring a strange wizard system, the protagonist opened the skylight above Dudley's head... Well, perhaps Merlin had taken off Dudley's roof. Dudley Dursley: "Let me explain, it's not what you think, I'm a spellcaster!" Under the moonlight, Dudley twisted his waist into a strange pose, and the background music rang out behind him. I admit that wizards have their limits, so I'm not going to be a wizard anymore! Potter!" 3. The protagonist of "The Soul of Hogwarts Traversing the World" obtained supernatural power in the first world,"Super Out of Control," and began his journey to the magical world. They would travel to different magical worlds, grow, overcome all kinds of difficulties, and create their own legends. In the Harry Potter world, he was the most powerful wizard to defeat Grindelwald; Voldemort would not even dare to mention his name. I hope you like this fairy's recommendation. Muah ~😗