Dragon Roar Master at Hogwarts

Summary: If you are not satisfied with the ending of a story, rewrite it yourself. A Harry Potter fan for 20 years, I woke up and traveled to the world of Harry Potter.Magic, magical creatures, witches, and the familiar Hogwarts are all waiting for me!Not to mention it also comes with the dragon roar magic system from my favorite game in the previous life.One shot of the unshakable power roar overturned Voldemort, one shot of the Sky-cleansing roar dispersed the Dementors, one shot of the Dragon Breaking Shout knocked down the Hungarian Horntails, one shot of Forced Will... Hehe, isn't this the beginning of a super god?Wait, the body I traveled through is actually Harry Potter's useless cousin Dali?It's over, only this fat muggle is still here