Rise of the Dragon

(Hijack pairing.)
Takes place in both movie 1 and 2 of HTTYD. Hiccup once had a friend named Jackson a joyful spirit who was only seen by those who had joy and love in their hearts even if it has left them long ago.
Jackson had left many years before Hiccup had trained and tamed his new best friend Toothless a Dragon.
Jack Frost on the other had never forgot the boy with the forest green eyes so full of wonder.
When he ends up on Berk when everything starts to go to hell. Feelings shared. Hearts crushed and lives lost.
Jack can only deal with so much before he must return to the other's: the other Spirit's and Guardians.
But does he want to leave after he see's hiccup after so long.
And can he deal with his heart being thawed out of the ice that is his past.
...(New and still working on)...