Let me live, or kill me now

Danny Fenton, 16 years old and half ghost. He woke up the day after his birthday a changed boy and when friends turn to enemies, it is only expected that past enemies can become your friends.
Let's just say that this was not how he expected this year to play out...
Crossover Danny Phantom x Sky High
Warning: Yaoi, Angst and gruesome, detailed description of injuries.