Shadow Hunting Vikings

hiccup horrendous haddock the III always knew he was different, but never in his wildest dreams did he think it was because he was a Shadowhunter! join him and his friends Toothless (human), Vanessa(OC), and Astrid as they fight to save the world from evil forces. starts off when they're all 6. (will have many OC's, as well as new demons and a few new runes). Hiccstrid!