I keep coming back to 'Anger's Gift' by seacliff on FanFiction.net. It digs into Harry’s fury after his name comes out of the Goblet, framing it not as teenage angst but as a legitimate, finally-broken response to years of neglect and trauma. The author makes you feel the heat of his magic reacting to his emotions, a kind of raw, untrained power that startles even Dumbledore. It’s less about the tournament and more about Harry realizing his own right to be angry—at the adults, at the world, at the unfairness of it all. The scenes where he confronts Sirius about the lack of real help are particularly sharp.
Some might find it a bit over-the-top in its 'Harry lashes out at everyone' approach, but I think that’s the point. After everything, a quiet acceptance would feel dishonest. The story loses a bit of steam later when it ties the anger into a specific magical inheritance trope, but the initial emotional core is solid. It’s a cathartic read when you’re frustrated with how canon handled his isolation that year.