Mixing 2 Worlds

Voldemort has been defeated and Harry is finally able to relax... sort of. When he meets Hiccup he is given a completely new perspective on dragons. And what happens when Hiccup realizes that in this world there are more Night Furies? And how does he get back to his? Rated T for possible language. Takes place after HTTYD 2. Hiccstrid and Harry/Ginny, possibly others.